Godoy, Marcelo Marcondes de, et al. “Energy Sources in Low Intake Supplements on the Productive and Reproductive Performance of Zebu Cows”. Semina: Ciências Agrárias, vol. 36, nº 3, junho de 2015, p. 1571-82, doi:10.5433/1679-0359.2015v36n3p1571.