Souza, J. C. da S. M. de, & Trindade Neto, M. A. (2020). Dietary levels of methionine plus cystine and chelated copper on the chemical composition of eggs and yolk cholesterol of 49-week-old brown laying hens. Semina: Ciências Agrárias, 41(1), 269–282. https://doi.org/10.5433/1679-0359.2020v41n1p269