KUMAR, SURESH, RAMESH CHANDRA, NAZRUL HAQUE, SAROJ TOPPO, and H RAHMAN. 2010. “Effect of GnRH and PGF2a on Uterine Involution and Post-Partum Fertility in Crossbred Cows”. The Indian Journal of Animal Sciences 80 (12). https://epubs.icar.org.in/index.php/IJAnS/article/view/2201.