F. . Zigo, M. . Vasiľ, M. . Kadáši, J. . Elečko, and Z. . Farkašová, “Bacteria Staphylococcus spp. izolated from mastitis of sheep and their enterotoxigenic properties”, Potr. S. J. F. Sci., vol. 5, no. 4, pp. 70–72, Dec. 2011.