The challenges of project management in small and medium-sized enterprises: a literature review based on bibliometric software and content analysis

The purpose of this paper is to design an overview about Project Management (PM) in Small and Medium-Sized Enterprises (SMEs) by analysing the evolution of publications and the main topics since 1996 to 2016 to motivate future research that helps SMEs to apply PM practices more efficiently. This study performed bibliometrics associated with content analysis of publications collected in scientific bases Web of Science and Scopus and in the periodic International Journal of Project Management. For that, the software VOSviewer, Nvivo, Minitab, and Excel were used in the analyses. The scan of 235 papers about Project Management in SMEs supported a literature overview. Furthermore, four thematic categories are highlighted: Project Management Practices, Planning and Control Systems, Collaboration, and Knowledge Management. Moreover, it was observed that SMEs requires a lighter PM methodology, focused on people and flexible. Besides that, the results show that the main challenges involve a lack of resources and qualified people and the high turnover. However, overcoming these issues, PM can benefit growth and innovation in SMEs. Therefore, this study presents a conceptual framework of benefits and challenges in Project Management in SMEs, reducing the research gap. Furthermore, recommendations for future research, mainly in Brazil, are given.


Introduction
Small and medium-sized enterprises (SMEs) perform an important role in economic and social development. While in the European Union as well as the average member countries of the Organization for Economic Co-operation and Development (OECD), small and medium-sized enterprises represent more than 90% of establishments and contribute more than 60% of total turnover (Muller et al., 2015). In Brazil, however, they represent more than 98% of the companies and contributed only 27% of GDP in 2011 (SEBRAE, 2014). For Feldmann (2011), the lack of innovation, entrepreneurship training, and cooperation between companies are the main responsible for this low performance.
The contribution of SMEs is not limited to the large number of companies, employees, and share of GDP, moreover, they are also responsible for innovation (Mannan et al., 2016). SMEs have a great innovative capacity, however, the lack of resources and knowledge hamper their development (Marcelino-Sádaba et al., 2014). Therefore, there is a need to accelerate the growth and competitiveness of these enterprises (Forsman, 2008) for the progress of the economy (Mannan et al., 2016).
The study by Pollack & Adler (2016) demonstrates that project management (PM) improves the financial performance of SMEs. In addition, Turner et al. (2010) confirms that it can benefit operations, growth and innovation processes of SMEs. However, there are obstacles in adopting traditional project management guides (such as PMBoK and IPMA ICB) because they are bureaucratic and have little focus on personal skills (Turner et al., 2009(Turner et al., , 2010(Turner et al., , 2012. In addition, SMEs have unique characteristics, such as limited human and financial resources, few clients, non-specialized employees, and high turnover (Forsman, 2008;Wong, 2005).
Despite their collaboration with the global economy and the key role in the development of nations, few publications about project management in SMEs are available (Juca et al., 2010;Pollack & Adler, 2016;Turner et al., 2010), and, according to Turner et al. (2012), for the PMI (Project Management Institute) interests SME-focused studies. To contribute to the literature, this article seeks to answer the following research question (RQ): What are the challenges and benefits of project management for SMEs?
Facing this context, this study aims to outline the project management landscape in SMEs from 1996 to 2016, identifying the main topics, references and trends, through bibliometric analysis and content according to literature methodologies (Carvalho et al., 2013a;Iritani et al., 2015;Watanuki et al., 2014). In this way, aiming to contribute to the construction of the knowledge of the area and with future research focused mainly on how project management can benefit SMEs.
The article follows this structure: section 2 presents the most relevant characteristics of SMEs and the main challenges. Section 3 explains the Research Methodology based on data of ISI Web of Science, Scopus and the International Journal of Project Management, on their statistical analyses (evolution of publications per year, main journals, and countries) and on bibliometrics (networks of keywords, co-citation, identification of outliers and hot topics). For this purpose, VOSviewer software (van Eck & Waltman, 2010), Nvivo (QSR International Pty Ltd., 2012) and Minitab (2010) are used. Section 4 shows the results of the previous analyses. Next, section 5 presents the content analysis of the main publications, and section 6 discloses the discussion. Finally, section 7 develops the conclusions, recommendations, and limitations.

SMEs: profile and main challenges
Different countries use diverse classifications of company sizes (OECD, 2016), as shown in Table 1. These divergences hamper the study of this area, so the commonly adopted classification is based on the number of employees (OECD, 2016), as in this study. The economic sector of SMEs also depends on the country. Among OECD members, SMEs are the majority of the construction and service sectors (OECD, 2016). The same report indicates that services and manufacturing predominate over construction in Brazil. In the European Union, the companies of service-related sectors are growing (Muller et al., 2015). In addition, the financial performance is also divergent, while the average OECD membership is 60% of the total economic value added; in Brazil, it is less than 50%; and, in Japan, it is practically 100% (OECD, 2016).  (Brasil, 2006) does not address medium-sized enterprises.
Despite these differences, SMEs have characteristics in common. In general, they have a small number of employees led by a visionary entrepreneur (Juca et al., 2010) or by founding partners, who also holds senior management roles, which means there are few hierarchical levels (Huin, 2004). Therefore, there is a close relationship between top-management and employees that provides informal communication (Huin, 2004;Malhotra & Temponi, 2010). In addition, employees perform various tasks (Malhotra & Temponi, 2010) and need multiple skills (Forsman, 2008) and there is no clear and formal division between departments (Huin, 2004). Moreover, SMEs do not usually have a product portfolio, hence they specialize in a niche market (Malhotra & Temponi, 2010).
SMEs need to address several challenges to become more competitive and to enter the market. Globalization, rapid advances in technology, and shortening product lifecycle force SMEs to be more innovative (Mannan et al., 2016). However, government difficulties and access to funding may hinder this process (OECD, 2016;Mannan et al., 2016). Another challenge is to hire qualified employees (Malhotra & Temponi, 2010), as the lack of necessary skills and human resistance to change are obstacles to innovation (Mannan et al., 2016). SMEs have lower intellectual capital than large companies (Hsu & Fang, 2009). Moreover, SMEs are not able to manage innovation in a systemic way, resulting in indefinite and flawed projects (Marcelino Sádaba et al., 2016).

Research methods
Given the characteristics of the objectives and research, the methodology is a systematic literature review (Carvalho et al., 2013a). The systematic review of the literature is built on a clear question whose answer is developed based on a reproducible scientific method that determines rigorous criteria for information evaluation. Because it is broad, the systematic review can synthesize important concepts from a certain field of knowledge. Thus, indicating trends for future research and providing researchers with a concise overview of the area. The systematic review employs several tools, among them, bibliometry, content analysis and semantics (Carvalho et al., 2013a;Sampaio & Mancini, 2007). For this work, we selected bibliometrics and content analysis.

Sampling process
The sample was collected from ISI Web of Science (2016) and Scopus (2016) databases, since they are bases that include publications from other databases and allow the extraction of metadata (abstracts, references, number of citations, institutions, among others) that support the bibliometric study (Carvalho et al., 2013a;Iritani et al., 2015;Watanuki et al., 2014). In addition, the ISI Web of Science presents only papers published in journals with impact-factor (IF) calculated in the Journal Citation Report (JCR) (Carvalho et al., 2013a). Additionally, publications of the International Journal of Project Management (IJPM, 2016) were included due to the importance of this journal. The strings were "project management" and "small company or medium companion or small enterpris * or medium enterpris * or sme", the publications were filtered by year (1996 to 2016) and by type (article, review, and article in press).
This process resulted in 408 identified publications. Of this sample, 33 publications were excluded because they were repeated and 140 because they did not approach Project Management in SMEs after reviewing titles, abstracts, and keywords. Most of the excluded were in the knowledge area, but not specifically for SMEs or were studies about large companies and SMEs. In these cases, an individual evaluation was executed to exclude only those whose main sample was composed of large companies and not SMEs. For example, Proverbs et al. (1999) presents the term SME only as a reference because the entire study was performed with projects of large companies in the construction sector. Hence, bibliometric and content analyses were performed as shown in Figure 1.

Data analysis
Bibliometry was conducted in two steps: metadata and content analyses. The first study, called Sample Demography, consisted of three stages: counting the number of publications per periodical per year, which identified the journals that generally approach the theme (Carvalho et al., 2013a); count of the total of publications per year, that delineated the evolution of the area; and stratification by country, which indicated the countries that contributed most to the construction of the area.
The second analysis was based on bibliometric networks of the metadata using VOSviewer (van Eck & Waltman, 2010). The first network was that of keywords, which established the terms that occur concomitantly. In this study were excluded similar terms (e.g. "erp", that means Enterprise Resource Planning); the second was that of co-citation, which demonstrated the degree of similarity between articles that are cited together (Carvalho et al., 2013a).
Nvivo software (Bazeley & Jackson, 2013) was used in content analysis and identification of hot topics. The hot topics indicate interesting topics in the area of knowledge, according to the methodology proposed by Banks (2006). In general terms, the calculated m-index, which results from the ratio of citations per author per year, indicates whether the topic is of wide scope and importance (m> 2), or has the potential to become a hot topic (0.5 < m <2), or if it is of restricted interest (m <0.5).
Outliers are papers with high performance of the impact factor (IF), which results of the relation between number of citations per year (Cn) and the impact factor of the journal according to the JCR (JIF), as Equation 1 demonstrates (Carvalho et al., 2013a). This statistical analysis was conducted in Minitab software. Articles without citations were excluded. Finally, the second stage relied on content analysis of these outliers and other relevant papers to identify the main topics addressed and the main challenges involved in SMEs' projects (Carvalho et al., 2013b). (1)

Sample demography
The 235 valid publications belonged to 137 journals from various areas such as engineering, business, administration, computer science, environmental sciences, decision science, among many others. Therefore, the theme was relevant and multidisciplinary. Of the total periodicals, approximately 70% had only one publication. Almost 20% of the publications were concentrated in 4 journals, namely International Journal of Project Management (30), ZWF (8), Production Planning and Control (7), and Construction Management and Economics (7). Regarding the publications of these 4 journals, as is shown in Figure 2, the first one was published in 2001, and it is interesting to note that only the IJPM showed an increasing trend in the number of publications. Reminding that the sample was withdrawn in September 2016, thus this number may have increased. The analysis of publications, Figure 3, per year revealed that, on average, journals accepted 12 publications per year and there was a peak with 26 publications in 2010. About half the sample came from six countries: the United Kingdom (17%), Germany (10%), the United States (7%), Taiwan (5%), Spain (5%) and India (4%), as is shown in Figure 4. The prominence of European nations was due to the most European companies are SMEs, therefore the development of these countries depends on their growth and innovation (Marcelino Sádaba et al., 2016). In relation to Brazil, only 4 publications were found, although 98% of their companies are SMEs, demonstrating that there is space for research in the area.   Figure 5 shows the keyword network designed in VOSviewer software, selecting keywords with at least 6 occurrences. The position reveals the proximity between the terms; and the lines, concomitant occurrences. Project management was the main theme that interconnects the others. Three major topics were: Manufacturing, Construction and Information, Innovation and Knowledge. Table 2 shows these categories.  The first theme, Manufacturing, embedded in the SME research because of the pressure they underwent to meet the needs of large customers and become globally competitive (Huin, 2004;Malhotra & Temponi, 2010). Examples of topics were: the implementation of advanced manufacturing technologies in SMEs (Dangayach & Deshmukh, 2005); the application of the ERP system (Huin, 2004;Malhotra & Temponi, 2010;Mohammadjafari et al., 2011;Muscatello et al., 2003;Zafeiropoulos et al., 2005); and the development of information system for mass customization (Dean et al., 2009).

Main themes
Regarding the second theme, Construction & Information, approximately, 10% of the sample addressed it. One of the most cited articles in the sample (127 citations), by Sage et al. (2010), states that construction sector SMEs should adopt supply chain practices to become more reliable and productive. Another relevant article (51 citations), by the Sexton & Barrett (2004), presents a model to help construction SMEs to improve technology management to become more competitive. Implementing information systems was widely approached as a means to control, integrate and manage chains of small and medium-sized contractors (Ahuja et al., 2009a;Jacobsson & Linderoth., 2012;Lee & Egbu, 2007;Lin, 2010;Pellicer et al., 2009).
About the third theme, it was assumed that innovation depends on knowledge management. There were researches that focused on developing specific methodologies for SMEs, such as innovation management (Maravelakis et al., 2006), risk management (Marcelino- Sádaba et al., 2014), and management of innovation portfolio (Von Ahsen & Heesen, 2009). Other studies addressed public policies to support innovation in SMEs (Egbetokun et al., 2009;Hwang & Ward, 2001). In addition, some researchers studied innovation projects between SMEs and research institutions (Bjerregaard, 2010;Davenport et al., 1998;Okamuro, 2007).
The analysis of hot topics identifies topics within a research area that are interesting to the scientific community (Banks, 2006). In Figure 6, it can be seen from the m-index that there were no hot topics, however, there were topics likely to become hot topics in a larger scientific community (0.5 <m ≤2) (Banks, 2006), they were: Processes, Information, Technology, Development, Products, and Success. The trend was confirmed in 6 of the 9 articles published in 2016, as is shown in Table 3. On the other hand, Software, Business, Construction, Knowledge, and Tools were topics of interest to a smaller scientific community (m <0.5) and were not hot topics (Banks, 2006).   (Dyerson et al., 2016) Among the published articles in 2016, the topic of success was presented in combination with processes and information technology. For example, according to Marcelino Sádaba et al. (2016) and Moreau (2016), the implementation of appropriate project management for SMEs is a critical success factor for the company's survival. Another success factor is the effective teamwork (Pons & Haefele, 2016). Regarding IT, Pollack and Adler cite "[…] using project management and IT professional skills to undertake core business activities make a significant contribution to improving the financial performance of small to medium enterprises." (Pollack & Adler, 2016, p. 836). Therefore, for researchers of SMEs, studies combining these topics are of interest to the scientific community. In addition, they are themes that are of interest to project management practitioners in SMEs, as they relate to the competitiveness and survival of these companies.

Outliers -main authors and studies
"While in many fields outliers can simply be discarded as being exceptions, in bibliometrics the extreme values represent the high-end of research performance and therefore deserve special attention", says Glänzel (2013, p. 13). In Figure 7, there are 17 outliers publications that cover mainly four themes: Project Management Practices, Control and Planning Systems, Collaboration, and Knowledge Management, which were discussed in the next session.   Wong's (2005) study about the knowledge management in SMEs received 51% of outliers' citations. The 17 outliers applied different methodologies, 8 were qualitative studies (semi-structured interviews, case study), 4 used qualitative and quantitative methods (literature review and research), 4 were exclusively quantitative (research) and only 1 performed a simulation. The predominance of qualitative studies revealed that it is a developing area (Fleury et al., 2016).
The co-citation network, Figure 9, shows the most cited references in the sample. This network represents the frequency that two documents were cited together (Small, 1973). Table 4 summarizes the main themes of the clusters. The criterion for selection of publications was a minimum of 7 times citation.   (Turner et al., 2009(Turner et al., , 2010(Turner et al., , 2012) (Rostami et al., 2015) *Based on the total link force calculated by VOSviewer; ** Cited the central reference.
Cluster 1 related to knowledge management presented the central reference with the highest number of citations. The most cited work was "The knowledge-creating company" (Nonaka & Takeuchi, 1995), whose main contribution was the definition of tacit and explicit knowledge. The study inspired articles about knowledge, risk management, obstacles to technology transfer and innovation in SMEs.
Cluster 5 had as main references the work of Peter Love who dealt with management in the construction industry, an example was the article "An exploratory study of information technology evaluation and benefits management of SMEs in the construction industry" (Love & Irani, 2004, p.227). He contributed to articles approaching the adoption of IT, communication and supply chain tools in SMEs in the construction industry.
Another highlight was the researcher Rodney Turner (cluster 6). His major contribution in the area was a series of three articles that compared the practices adopted according to the SMEs' size and nature. These papers supported a project management approach more appropriate to the characteristics and needs of these companies (Turner et al., 2009(Turner et al., , 2010(Turner et al., , 2012.

Content analysis
The content analysis, based on the main papers, led to four thematic categories: Project Management Practices, Planning and Control Systems, Collaboration, and Knowledge Management. They are presented in Table 5. Figure 10 summarizes the discussion.

Project management practices
SMEs implemented project management both to accomplish internal innovation and growth and to attend external customers' requirements (Turner et al., 2010(Turner et al., , 2012. Businesses that used PM practices commonly reported increased profitability (Pollack & Adler, 2016). However, very bureaucratic and formal methodologies, such as those proposed by PRINCE2, were not the most suitable, as best fit to large engineering and construction projects (Turner et al., 2010). SMEs required "light" versions of PM guides, aimed at non-specialized employees and involving informal communication. In addition, the practices required by smaller companies are different from those required by medium-sized enterprises (Turner et al., 2012).
SMEs applied PM practices in their operations to provide customized products to their customers, and to manage growth and innovation (Marcelino-Sádaba et al., 2014;Turner et al., 2010). However, few companies followed rigorous methodologies (Currie, 2003). Consequently, SMEs became less competitive and innovative than large companies (Hsu & Fang, 2009;Wong, 2005). Therefore, SMEs used and needed project management practices, however, two key factors impacted their success: limited resources and a lack of skilled employees (Le Pochat et al., 2007;Turner et al., 2010;Wong, 2005). Hence, there is a great challenge to be overcome: developing efficient and feasible PM approaches to be performed by SMEs. In this context, the literature has focused mainly on developing procedures, guides and models to assist in their successful implementation, as an example they presented models for risk management (Currie, 2003;Marcelino Sádaba et al., 2014;Renna & Argoneto, 2010); resource management (Meade & Presley, 2002); and ecodesign (Le Pochat et al., 2007).

Planning and control systems
SMEs faced great challenges in entering global markets and becoming suppliers to large consumers (Malhotra & Temponi, 2010). Mainly, in the manufacturing sector, they required production planning and control to deal with large companies (Huin, 2004). However, most enterprises were not used to plan, instead, they had produced only upon request of the customer (Renna & Argoneto, 2010). To change this culture, SMEs adopted production planning tools already used by large companies, such as Enterprise Resource Planning (ERP) (Huin, 2004;Malhotra & Temponi, 2010;Muscatello et al., 2003) and Workload Control (WLC) (Stevenson et al., 2011).
Hence, SMEs began to adopt systems that aid in the planning of production. Although these systems appeared as competitive advantages, their costly and complex implementation resulted in failures (Huin, 2004;Malhotra & Temponi, 2010;Muscatello et al., 2003). Thus, the literature focused on identifying the success factors and developing suitable models for SMEs to implement ERP (Huin, 2004;Malhotra & Temponi, 2010;Muscatello et al., 2003), WLC (Stevenson et al., 2011) and a new model for connecting commercial planning and negotiation through digital platforms (e-procurement) (Renna & Argoneto, 2010).

Collaboration
Collaboration projects were means of sharing knowledge and tools. They were important, especially, for SMEs to overcome the lack of resources and to remain competitive. These due to the synergy effect, such as scale and scope gain, and risk reduction (Kernel, 2005;Okamuro, 2007). Many nations promoted cooperation between SMEs and research institutes and universities to encourage commercially productive relations through technology transfer (Bjerregaard, 2010;Davenport et al., 1998). Moreover, co-operation among SMEs could lead to common goals that benefit all companies in the same sector that would be difficult to achieve individually (Kernel, 2005).
Therefore, cooperation projects were important for SMEs to achieve strategic objectives, such as the development of a new product or sustainable development. The studies focused on the success factors for shared projects between SMEs and public research institutes (Bjerregaard, 2010;Davenport et al., 1998;Okamuro, 2007), and among SMEs and other business partners (Kernel, 2005;Okamuro, 2007).
Collaboration with other organizations can be a strategy for innovation in SMEs (Bjerregaard, 2010;Davenport et al., 1998;Kernel, 2005;Okamuro, 2007). It was a logical response to turbulent conditions and was a mean of transferring knowledge and tools (Kernel, 2005), technology (Davenport et al., 1998) and gain of scale and scope (Okamuro, 2007). However, there are also difficulties in managing these types of projects. For their success, they required efficient stakeholder management (Kernel, 2005), the establishment of trust between stakeholders, and a clear division of costs, responsibilities, and results (Davenport et al., 1998). Hence, PM practices were essential for SMEs to manage their innovation processes that allow them to be more competitive in the market.

Knowledge management in SMEs
Project management also benefited innovation through knowledge management. Knowledge management is critical to business success (Wong, 2005). Most of the knowledge in SMEs was in the tacit form (Miranda et al., 2014), which was difficult to communicate and formalize (Sexton & Barrett, 2004). Tacit knowledge is highly personal, non-standardized and consists especially of know-how (Currie, 2003). While explicit knowledge is formal, which makes it easy to share information and procedures (Currie, 2003). Furthermore, another difficulty in managing knowledge was the employee turnover, which led to information loose (Wong, 2005).
Successful implementation of knowledge management depends on the support of leadership, organizational culture, available technologies, and infrastructure, as well as strategic alignment and human resource management (Wong, 2005). In addition to inadequate knowledge management, other factors may have led to failures in innovation capacity, such as: the lack of investment in intellectual capital (human, relational and structural) (Hsu & Fang, 2009), difficulties in introducing a new concept in the market, and to establish partnerships with organizations capable of producing innovation (Mannan et al., 2016).

Discussion
Supported by the results of the bibliometrics (keywords and co-citation networks), hot topics and content analysis of outliers, it was possible to map which themes are trends. The topics that were identified in all the analyses and their respective numbers of related publications were: Product Development (33), Information Technology (23), and Project Management (208). The themes of Planning (74), Knowledge Management (45) and Construction (42) were not only identified as a hot topic, however, they appeared in all other analyses.
Therefore, for researchers interested in SMEs, a trend is approaching the critical success factors and processes required for Project Management. A recommended source due to its prominence as a theoretical pillar (the network of co-citation) and as outlier are the articles of the group Turner, Ledwith & Kelly. This group has conducted a series of studies to identify the best practices already used and the needs of European SMEs (Turner et al., 2009(Turner et al., , 2010(Turner et al., , 2012. These surveys could be replicated in other countries because they detail the methodology. Another trend identified is the Knowledge Management. One of the theoretical pillars is the author Ikujiro Nonaka who popularized the classification of knowledge in tacit and explicit and demonstrated its importance for innovation (Nonaka & Takeuchi, 1995). Knowledge management is recognized as a way to innovation, new product development and competitive advantage (Hang Do et al., 2014;Hsu & Fang, 2009;Huang et al., 2008;Sexton & Barrett, 2004;Wong, 2005). Furthermore, it is imperative for risk management, since it is necessary to create a history of risk and to share information to develop a risk assessment model (Currie, 2003;Leopoulos et al., 2006;Marcelino-Sádaba et al., 2014).
Moreover, the importance of the construction industry is highlighted. "Most construction companies are small and medium-sized enterprises (SMEs) that manage project-based and business-focused activities simultaneously" (Pellicer et al., 2009, p. 4). The construction sector experienced transformations to absorb tools developed in the manufacturing to become more productive and reduce costs and waste (Dainty et al., 2001;Taggart et al., 2014). This evolution was also drawn in the keyword network since terms related to industry, production, and planning (such as ERP) preceded those related to construction. Therefore, there was a transfer of knowledge and tools from the manufacturing to the construction. As construction was not indicated as a hot topic, other sectors should dominate research in the area, such as technology companies (startups) and services, because SMEs dominate these sectors (OECD, 2016).
Regarding the Brazilian scenario, the sample had only four articles and, curiously, all dealt with technology-based SMEs. They are recent publications, after 2009, which supports the previous hypothesis that research on technology companies is a trend. Brazilian SMEs presented high levels of informality and a lack of knowledge and risk management (Juca et al., 2010;Miranda et al., 2014). The researches were performed in a qualitative way, demonstrating that the area is still in development. The themes were: project management maturity (Juca et al., 2010); risk management (Miranda et al., 2014); PMO implementation (Richter, 2009); and the development of software that could help SMEs to improve their practices (Pereira et al., 2013).
Therefore, quantitative studies are needed to have a diagnosis of project management practices in SMEs in Brazil. Turner, Ledwith & Kelly publications can serve as a basis. Moreover, none addressed critical success factors, so identifying them for the national context would also be a relevant contribution. Although all four articles approached with technological SMEs, they focused on the development of software. Thus, studies in other sectors would be relevant due to their essential role in the social and economic development of the country through innovation (Juca et al., 2010). One example would be to study the relationship of cooperation between SMEs and public research institutes and universities in biotechnology projects, as they result in products of high added value that directly impact the population.

Conclusions
This article proposed to answer the RQ: What are the challenges and benefits of project management for SMEs?
The survey of 235 publications on Project Management in SMEs from the Web of Science and Scopus databases and the International Journal of Project Management allowed us to answer the research question, contributing to the literature in presenting the challenges, characteristics, and benefits of project management in SMEs.
Project management in SMEs is characterized by their requirement for lighter PM methodologies, associated with the flexibility, few resources, people-oriented, and for non-specialized employees. In addition, for a good PM, SMEs should seek collaboration with external stakeholders to mitigate resource shortages, looking for synergies. The benefits indicated increased profitability and innovation in SMEs. The results demonstrated that the main challenges involve the lack of resources and qualified personnel and high turnover.
Four thematic categories appeared to be most promising for future work: Project Management Practices; Planning and Control Systems; Collaboration; and Knowledge Management.
Through bibliometric and content analysis, it was observed that there was a transition of knowledge and practices between sectors. Initially, the studies focused on the manufacturing industry as small and medium suppliers of large companies needed to adapt to project management practices to become more competitive and serve global markets. The prominence in the area was the studies on implementing ERP (Enterprise Resource Planning) systems. These practices were adopted by the construction industry, also formed predominantly by SMEs, to become more productive. Finally, through the analysis of hot topics and the most recent articles, we noticed that the focus is becoming technology-based companies.
Finally, we suggested a quantitative study to evaluate the extent of the use of good management practices and to identify the critical success factors for the projects in Brazil. In addition, it was encouraged to expand research on technology-based SMEs since innovation is the way to social and economic development (Juca et al., 2010). Moreover, it would be interesting to approach partnerships with universities, because collaboration helps to optimize the use of resources and results in innovation through technology transfer.
The limitations of this article were associated with the methodology. Interesting articles may have been excluded from sampling, although the bases chosen are very inclusive. Additionally, important information may have been lost during data analysis as it is subject to human error. However, we believe that statistical and bibliometric analyses help to soften biased interpretations.