Ferraz, José Bento Sterman, and Francisco A. de Moura Duarte. 1991. “Genetic Parameters of Characteristics Related to Productivity of Large White Sows”. Pesquisa Agropecuaria Brasileira 26 (8):1255-65. https://doi.org/10.1590/S1678-3921.pab1991.v26.3463.