Bertan, Claudia Maria, et al. “Endocrine and Molecular Mechanisms Involved in the Formation of Corpus Luteum and Luteolysis: A Review”. Brazilian Journal of Veterinary Research and Animal Science, vol. 43, no. 6, Dec. 2006, pp. 824-40, https://doi.org/10.11606/issn.1678-4456.bjvras.2006.26563.