Souza, R. M. de, and E. H. Birgel Junior. “Influence of Puerperium and Post-Puerperal Phase on the Lipid Profile of Health Holstein Cows”. Brazilian Journal of Veterinary Research and Animal Science, vol. 46, no. 1, Feb. 2009, pp. 5-10, doi:10.11606/issn.1678-4456.bjvras.2009.26743.