LitoninaА. S., Y. M. Smirnova, A. V. Platonov, G. Y. Laptev, T. P. Dunyashev, and M. V. Butakova, “Application of enzyme probiotic drug developed based on microorganisms of the rumen of reindeer (Rangifer tarandus) in feeding cows ”, Regul. Mech. Biosyst., vol. 12, no. 1, pp. 109-115, Jan. 2021.