Petruh, I., M. Simonov, V. Vlizlo, and D. Ostapiv. “The Role of Insulin-Like Growth Factor and Leptin in the Pathogenesis of Internal Non-Contagious Pathology of Dairy Cows”. Ukrainian Journal of Veterinary and Agricultural Sciences 1, no. 2 (November 4, 2018): 19-22. Accessed August 25, 2019. https://ujvas.com.ua/index.php/journal/article/view/10.