P. CHANDRA, B. D. LAKHCHAURA, S. C. SUD, U. K. ATHEYA, and G. K. GARG, “Effect of GnRH alone or in combination with estrogen on the ovarian activity of postpartum anestrous cows”, Indian J of Anim Sci, vol. 65, no. 11, Oct. 2013, Accessed: Oct. 24, 2025. [Online]. Available: https://epubs.icar.org.in/index.php/IJAnS/article/view/33887