Shablia, V., I. Zadorogna, and P. Shablia. “Comparative Evaluation of the Impact Growing Heifers and Feeding Cows on Milk Yields”. Bulletin of Sumy National Agrarian University. The Series: Livestock, no. 1-2(36-37), July 2019, pp. 107-13, doi:10.32845/bsnau.lvst.2019.1-2.16.