Yaremchuk, V., and L. Slivinska. 2020. “Prevention of Hepatosis in Laying Hens Using Hepatoprotectors Hep-A-Stress and Hepasan-VS”. Ukrainian Journal of Veterinary and Agricultural Sciences 3 (3), 8-14. https://doi.org/https://doi.org/10.32718/ujvas3-3.02.