Parnikoza, Iwan, Vladimir Boreiko, Vladimir Sesin, and Maryna Kaliuzhna. “History, Current State and Perspectives of Conservation of European Bison in Ukraine”. European Bison Conservation Newsletter 2 (September 1, 2009): 5–16. Accessed June 17, 2024. http://ojs.wisent.org/index.php/czasopismo/article/view/164.