Biradar, Srikant, et al. “Study on Efficacy of Cosynch and Ovsynch Protocols on Fertility in Repeat Breeder Buffaloes”. Buffalo Bulletin, vol. 35, no. 4, Dec. 2016, pp. 737-43, https://kuojs.lib.ku.ac.th/index.php/BufBu/article/view/1468.