@article{ballou_1997, title={Business logistics: importance and some research opportunities}, volume={4}, ISSN={0104-530X}, url={https://doi.org/10.1590/S0104-530X1997000200001}, DOI={10.1590/S0104-530X1997000200001}, number={2}, journal={Gestão & Produção}, publisher={Universidade Federal de São Carlos}, author={Ballou, Ronald H.}, year={1997}, month={Aug}, pages={117–129} }