BANDYOPADHYAY, SAMIRAN, et al. “Collibacillosis in Newborn Yak Calves and Antibiogram Profile of Rectal Flora Isolated from the Same”. The Indian Journal of Animal Sciences, vol. 78, no. 10, Mar. 2011, https://epubs.icar.org.in/index.php/IJAnS/article/view/4885.