@article{mota_pereira_santos_vieira_2012,  title={Agronomic and economic viability of intercropping onion and lettuce},  volume={30},  ISSN={0102-0536},  url={https://doi.org/10.1590/S0102-05362012000200028},  DOI={10.1590/S0102-05362012000200028},  number={2},  journal={Horticultura Brasileira},  publisher={Associação Brasileira de Horticultura},  author={Mota, Wagner F da and Pereira, Rosimeire D and Santos, Gizeli de S and Vieira, Janiele Cássia B},  year={2012},  month={Apr},  pages={349–354} }