Cassiano, Lisângela Aparecida Pinheiro, et al. “Genetic Parameters of Production and Reproduction Traits of Buffaloes in the Brazilian Amazon”. Pesquisa Agropecuaria Brasileira, vol. 39, no. 5, May 2004, pp. 451-7, doi:10.1590/S1678-3921.pab2004.v39.6793.