Savani, HR, et al. “Serum Progesterone, Oestradiol-17β, FSH and LH Levels in Anestrus Surti Buffaloes Treated With Ovsynch Alone and in Combination With PRID”. Indian Journal of Veterinary Sciences and Biotechnology, vol. 13, no. 3, Jan. 2018, pp. 27-32, https://acspublisher.com/journals/index.php/ijvsbt/article/view/2636.