SRIVASTAVA, S K; SANWAL, P C; UMASHANKAR, Umashankar; VARSHNEY, V P; SAHNI, K L. Pregnancy rates in bovines based on plasma progesterone concentration during AI under farm and village conditions. The Indian Journal of Animal Sciences, Delhi, India, v. 69, n. 6, 2012. Disponível em: https://epubs.icar.org.in/index.php/IJAnS/article/view/20597. Acesso em: 23 oct. 2025.