A. Sharma, N. K. VASISHTA, M. SINGH, and P. KUMAR, “Effect of Timed insemination and Gonadotropin releasing hormone administration on conception in pre-synchronized repeat breeder cows”, Indian J of Anim Sci, vol. 81, no. 9, May 2011, Accessed: Jun. 03, 2026. [Online]. Available: https://epubs.icar.org.in/index.php/IJAnS/article/view/4125