@article{lopes_dourado neto_manfron_jasniewicz_2004,  title={Models to estimate phytomass accumulation of hydroponic lettuce},  volume={61},  ISSN={0103-9016},  url={https://doi.org/10.1590/S0103-90162004000400007},  DOI={10.1590/S0103-90162004000400007},  number={4},  journal={Scientia Agricola},  publisher={Escola Superior de Agricultura "Luiz de Queiroz"},  author={Lopes, Sidinei José and Dourado Neto, Durval and Manfron, Paulo Augusto and Jasniewicz, Luís Renato},  year={2004},  pages={392–400} }