Ferraz, José Bento Sterman, and Francisco Alberto de Moura Duarte. “Heterosis in Preweaning Traits in Swine”. Brazilian Journal of Veterinary Research and Animal Science 28, no. 2 (December 2, 1991): 235–242. Accessed May 9, 2024. https://revistas.usp.br/bjvras/article/view/51943.