Bényei, Balázs, and Celso Walter Costa Barros. “Physiological Variations of Reproduction Parameters of Holstein-Friesian Cows Imported from Hungary to Northeastern Brazil”. Brazilian Journal of Veterinary Research and Animal Science 37, no. 3 (January 1, 2000): 216-220. Accessed September 27, 2022. https://www.revistas.usp.br/bjvras/article/view/5818.