Kharche, S D, and S Srivastava. “Synchronization of Oestrus and Subsequent Conception in Dairy Cows Treated With Prostaglandin F2 a”. The Indian Journal of Animal Sciences, vol. 75, no. 8, Aug. 2005, https://epubs.icar.org.in/index.php/IJAnS/article/view/9450.