Peres, K.R. et al. 2006. Utilization of the first ovulatory cycle of seasonal breeding for embryo production in mares in tropical conditions. Brazilian Journal of Veterinary Research and Animal Science. 43, 2 (Apr. 2006), 270–279. DOI:https://doi.org/10.11606/issn.1678-4456.bjvras.2006.26509.