Berezovsky, A., and B. Morozov. “The Effectiveness of "ELITE ZOO DOG" and "ELITE ZOO KET" On the Helminth Fauna of Small Pets”. Bulletin of Sumy National Agrarian University. The Series: Veterinary Medicine, no. 3 (50), Dec. 2020, pp. 38-43, doi:10.32845/bsnau.vet.2020.3.6.