Sampaio, A. A. M.; Ezequiel, J. M. B.; Oliveira, M. D. S. de; Vieira, P. de F. Dry Matter, Calcium and Phosphorus in Ovine Rations Containing Cottonseed Meal, Yeast and Urea. PAB 1996, 31 (4), 301-304. https://doi.org/10.1590/S1678-3921.pab1996.v31.4485.