“Reintroduction of European bison to semi-natural meadows in Grażyna Valley within the confines of the Rural Areas Development Program for years 2007–2013” (2009) European Bison Conservation Newsletter, 2, pp. 197–203. Available at: https://ojs.wisent.org/index.php/czasopismo/article/view/191 (Accessed: 17 April 2026).