Karpenko , Bogdan. “Economically Useful Qualities of Sows Landrace and Large White for Purebred Breeding, Crossbreeding and Hybridization in Conditions of Industrial Crossing”. Bulletin of Sumy National Agrarian University. The series: Livestock, no. 1 (40) (February 24, 2020): 59-64. Accessed April 23, 2024. https://www.snaubulletin.com.ua/index.php/ls/article/view/170.