SRIVASTAVA, S K; VARSHNEY, V P; ., UMASHANKER; SAHNI, K L. Progesterone profile during estrus cycle in different breeds of cow under tropical climate. The Indian Journal of Animal Sciences, Delhi, India, v. 78, n. 6, 2011. Disponível em: https://epubs.icar.org.in/index.php/IJAnS/article/view/4754. Acesso em: 23 oct. 2025.