E.M. Kislyakova, E.V. Achkasova, E.L. Vladykina, G.Yu. Berezkina, S.P. Bass, G.V. Azimova. 2022. “ Alternative Sources of Protein in the Diets of Highly Productive Cows”. Revista Electronica De Veterinaria, March, 07 - 13. https://www.veterinaria.org/index.php/REDVET/article/view/156.