V.G. Semenov, A.D. Baimukanov, A.S. Alentayev, R.M. Mudarisov и A.K. Karynbayev 2021. DAIRY PRODUCTIVITY OF HOLSTEIN COWS OF DIFFERENT BREEDINGS UNDER THE CONDITIONS OF COMMERCIAL DAIRY FARMS. «Вестник НАН РК». 3 (окт. 2021), 110–115.