Yehorchenkova, S. V., and Y. M. Pavlenko. “HISTORICAL ASPECTS OF THE TRANSFORMATION OF THE SYSTEM OF EVALUATION OF DOGS’ WORKING QUALITIES UNDER THE NATIONAL PROGRAM "VIDSICH" (PROTECTIVE DOG)”. Bulletin of Sumy National Agrarian University. The Series: Livestock, no. 1, Apr. 2023, pp. 17-24, doi:10.32782/bsnau.lvst.2023.1.3.