Khmelnychyi , L., and V. Vechorka. “The Influence of Linear Conformation Traits on the Condition of Milk Productiviti of Cows Firstborn Ukrainian Black-and-White and Red-and-White Dairy Breeds”. Bulletin of Sumy National Agrarian University. The Series: Livestock, no. 1 (40), Feb. 2020, pp. 11-16, doi:10.32845/bsnau.lvst.2020.1.2.