Kochuk-Yashchenko , Oleksandr, Dmytro Kucher, Valentyn Lobodzinskyi, and Vadym Holiak. 2021. “Economic Useful Features of Simental Breed Cows of Different Linears in Conditions of Organic Production”. Bulletin of Sumy National Agrarian University. The Series: Livestock, no. 2 (45) (May), 88-95. https://doi.org/10.32845/bsnau.lvst.2021.2.13.