Livoshchenko, L. P., and E. M. Livoshchenko. “METHODS OF EARLY DIAGNOSIS OF MAREK’S DISEASE”. Bulletin of Sumy National Agrarian University. The Series: Veterinary Medicine, no. 1 (56), June 2022, pp. 24-30, doi:10.32845/bsnau.vet.2022.1.4.