Ramos, A. de A.; Malhado, C. H. M.; Carneiro, P. L. S.; Gonçalves, H. C.; Azevedo, D. M. M. R. Phenotypic and Genetic Characterization of the Milk Yield and Calving Interval in Buffalo of the Murrah Breed. PAB 2006, 41, 1261-1267.