Ladyka, V., Khmelnychyi, L., Shpetnyi, M. and Vechorka, V. (2019) “Productivity of piglets on rearing with large-group confinement on polymer and concrete floor”, Bulletin of Sumy National Agrarian University. The series: Livestock, (1-2(36-37), pp. 3-14. doi: 10.32845/bsnau.lvst.2019.1-2.1.