Kulakova, M. B., and Yu. P. Polupan. “THE RELATIONSHEEP OF THE BREEDING VALUE OF BULLS WITH THE PRODUCTIVITY OF THEIR MOTHERS AND THE BREEDING VALUE OF THEIR PARENTS BREEDING”. Animal Breeding and Genetics 620 (December 8, 2021): 49-58. Accessed May 28, 2022. https://abg-journal.com/index.php/journal/article/view/332.