Vaz, R. Z., E. L. Azambuja Ribeiro, J. Restle, F. N. Vaz, P. S. Pacheco, and J. L. Moletta. “Productive Efficiency of Cows Primiparous Aberdeen Angus of the Body Size and Milk Production Levels”. Bioscience Journal, vol. 32, no. 5, Oct. 2016, pp. 1296-04, doi:10.14393/BJ-v32n5a2016-32823.