MAURYA, S K; MATHUR, A K. Oestrogen and progesterone concentration in Frieswal cows during superovulation. The Indian Journal of Animal Sciences, Delhi, India, v. 80, n. 8, 2010. Disponível em: https://epubs.icar.org.in/index.php/IJAnS/article/view/348. Acesso em: 14 jun. 2026.