M. Gukezhev , Vladimir, Musa S. Gabaev, and Zhamal K. Zhashuev. “Role, Importance and Peculiarities of Record Cows in the Formation of High-Production Herds”. KnE Life Sciences 6, no. 3 (April 5, 2021): 845–852. Accessed September 17, 2021. https://knepublishing.com/index.php/KnE-Life/article/view/9022.