Khvostik , V., and Y. Bondarenko. “Breeding and Genetic Approaches to the Breeding of New Genotypes of Dymorphous Geese”. Bulletin of Sumy National Agrarian University. The Series: Livestock, no. 2 (45), May 2021, pp. 47-53, doi:10.32845/bsnau.lvst.2021.2.7.