Sicheski, Sirineu José, et al. “Longitudinal Retrospective Study on the Effect of Season on Milk Production and Composition in Rio Grande Do Sul, Brazil”. Semina: Ciências Agrárias, vol. 41, no. 4, May 2020, pp. 1355-72, doi:10.5433/1679-0359.2020v41n4p1355.