Grillo, Gustavo Fernandes, et al. “Effect of Gynecological Screening on Rates of Conception and Gestation Total of Nellore Cows Submitted to Three Protocols for Fixed-Time Artificial Insemination (TAI)”. Brazilian Journal of Veterinary Medicine, vol. 37, no. 3, Oct. 2015, pp. 250-4, https://bjvm.org.br/BJVM/article/view/396.