Binelli, M.; Rodrigues, P. H. M.; Celeguini, E. C. C.; Almeida, A. B. de; Rossa, L. A. F.; Baruselli, P. S.; Madureira, E. H. Use of HCG, GnRH or 17²-Estradiol and Progesterone Associated With Melengestrol Acetate and Prostaglandin F2± in Cross-Bred Heifers (Bos Taurus Indicus X Bos Taurus Taurus). Braz. J. Vet. Res. Anim. Sci. 2005, 42 (4), 237-249. https://doi.org/10.11606/issn.1678-4456.bjvras.2005.26417.