Kozicki, Luiz Ernandes, et al. “Ovarian and Uterine Disturbances Occured in the Puerperium of Cows and Their Relationship With Progesterone in the Milk”. Pesquisa Agropecuaria Brasileira, vol. 19, no. 3, Apr. 2014, pp. 371-4, https://doi.org/10.1590/S1678-3921.pab1984.v19.15478.