Pochukalin, A. Ye. “GENETIC POTENTIAL OF HOLSTEIN BULLS CARRYING THE RED FACTOR IN TERMS OF BREEDING VALUE”. Bulletin of Sumy National Agrarian University. The series: Livestock, no. 4 (December 30, 2024): 35-40. Accessed February 23, 2025. https://snaubulletin.com.ua/index.php/ls/article/view/1225.