Lakshmi, K., K. Padmaja, P. Nagaraj, A. Gopala Reddy, and M. Gnana Prakash. 2018. “Ultrasonographic Diagnosis of Biliary Tract Disorders in Dogs”. International Journal of Livestock Research 8 (10). India:281-86. http://ijlr.org/ojs_journal/index.php/ijlr/article/view/1567.