Dangar, Nikhil S, et al. “Effect of Season and Year of Birth on Pubertal Age, Body Weight and Scrotal Circumference of Kankrej Bulls at First Semen Collection”. Indian Journal of Veterinary Sciences and Biotechnology, vol. 17, no. 1, Jan. 2021, pp. 35-38, https://acspublisher.com/journals/index.php/ijvsbt/article/view/2237.