[1]
G. F. Grillo, A. L. L. Guimarães, S. R. B. do Couto, M. A. Figueiredo, and H. B. Palhano, “Comparison of pregnancy rate between heifers, primiparous and multiparous Nellore submitted to artificial insemination fixed time”, Braz. J. Vet. Med., vol. 37, no. 3, pp. 193–197, Oct. 2015.