@article{oliveira_tsai_2001,  title={Bean cultivation in a subsistence farming system in the northeast of São Paulo state - Brazil},  volume={58},  ISSN={0103-9016},  url={https://doi.org/10.1590/S0103-90162001000200008},  DOI={10.1590/S0103-90162001000200008},  number={2},  journal={Scientia Agricola},  publisher={Escola Superior de Agricultura "Luiz de Queiroz"},  author={Oliveira, Wladecir Salles de and Tsai, Siu Mui},  year={2001},  month={Apr},  pages={265–269} }