Ladyka, V.I., and S. L. Khmelnychyi. “Phenotypic Consolidation Breeding Groups of Cows Sumy Intrabreed Type of Ukrainian Black-and-White Dairy Breed of Different Origin by Linear Traits of Conformation Type”. Bulletin of Sumy National Agrarian University. The series: Livestock, no. 3 (38) (September 30, 2019): 3-11. Accessed May 4, 2024. https://snaubulletin.com.ua/index.php/ls/article/view/100.