BHUYAN, M; DEKA, B C; SARMAH, B C; CHAKRAVARTY, P; AHMED, K. Signs of oestrus after synchronization of oestrus in yak using progesterone impregnated vaginal sponge. The Indian Journal of Animal Sciences, Delhi, India, v. 83, n. 1, 2013. Disponível em: https://epubs.icar.org.in/index.php/IJAnS/article/view/26435. Acesso em: 3 jun. 2026.