@misc{misce8849a0c, title = {Progestogen or GnRH-hCG supplementation after artificial insemination in postpartum beef cows}, author = {Machado, R and Bergamaschi, M. A and Almeida, R. G and Sudano, Mateus José and Alencar, M. M and Binelli, Mario}, year = {2012}, booktitle = {Annual Meeting of the Brazilian Embryo Technology Society} }