Ortiz, W. H., C. R. Quirino, A. Silva, C. S. Oliveira, Serapião R. V., A. Pacheco, and A. Bartholazzi. “Association Between BMP4 Gene Polymorphism and in Vitro Embryo Production Traits in Gyr Cows”. Revista Colombiana De Ciencias Pecuarias, vol. 28, no. 2, Apr. 2015, pp. 156-64, doi:10.17533/udea.rccp.324920.