A. Szelag-Sikora, M. Komorowska, O. Ovcharuk, Z. Grodek-Szostak, and J. Stuglik, “INNOVATION IN A PRODUCER GROUP FOCUSED ON MILK PRODUCTION OF THE SILESIAN PROVINCE”, SIE, vol. 6, pp. 510–519, May 2019, doi: 10.17770/sie2019vol6.3955.