Fernandes, Carlos Eurico, et al. “Seasonality of Ovarian Characteristics and Oocytes Production in Bos Indicus Cattle in Mato Grosso Do Sul”. Brazilian Journal of Veterinary Research and Animal Science, vol. 38, no. 3, Jan. 2001, pp. 131-5, https://doi.org/10.1590/S1413-95962001000300007.