Chase, C., C. Vargas, A. Hammond, T. Olson, J. Griffin, C. Murphy, A. Tewolde, and M. Fields. “Embryo Transfer in Angus and Brahman Recipient Cows: Effect of Two Methods of Estrus Synchronization on Induced Estrus and Pregnancy”. Revista Científica De La Facultad De Ciencias Veterinarias, Vol. 19, no. 6, 1, https://www.produccioncientificaluz.org/index.php/cientifica/article/view/15509.