Guerra, Antonia Mirian Nogueira de Moura, Ana Cecília Moura Costa, and Paula Raniele Freitas Tavares. 2017. “Photosynthetic Activity and Yield of Lettuce Grown under Shading”. Agropecuária Técnica 38 (3):125-32. https://doi.org/10.25066/agrotec.v38i3.29246.