Ferraz, J.B.S. and Duarte, F.A. de M. 1991. Genetic parameters of characteristics related to productivity of Large White sows. Pesquisa Agropecuaria Brasileira. 26, 8 (Aug. 1991), 1255–1265. DOI:https://doi.org/10.1590/S1678-3921.pab1991.v26.3463.