Beninni, Elisabete R. Yonamini, Hideaki Wilson Takahashi, and Carmen Silvia Vieira J. Neves. 2005. “Concentration and Accumulation of Macronutrients in Hydroponic and Conventional Lettuce”. Semina: Ciências Agrárias 26 (3):273-82. https://doi.org/10.5433/1679-0359.2005v26n3p273.