@article{valois b. jr_oliveira_2011, title={Recommender systems in social networks}, volume={8}, ISSN={1807-1775}, url={https://doi.org/10.4301/S1807-17752011000300009}, DOI={10.4301/S1807-17752011000300009}, number={3}, journal={JISTEM - Journal of Information Systems and Technology Management}, publisher={TECSI Laboratório de Tecnologia e Sistemas de Informação - FEA/USP}, author={Valois B. Jr, Cleomar and Oliveira, Marcius Armada de}, year={2011}, month={Sept}, pages={681–716} }