Ribeiro, E. L. de A.; Restle, J.; Pires, C. C. Milk Production and Composition in Charolais and Angus Cows Nursing Straightbred or Crossbred Calves. PAB 1991, 26 (8), 1267-1273. https://doi.org/10.1590/S1678-3921.pab1991.v26.3464.