Janicka, D., Hołubczat, E., Karnecki, R., Tracz, M., Tracz, M., Bereszyński, A., & Olech, W. (2008). Restitution of the European bison Bison bonasus (L. 1758) as a component of active conservation within Natura 2000 sites of Western Pomerania. European Bison Conservation Newsletter, 1, 132–139. Retrieved from http://ojs.wisent.org/index.php/czasopismo/article/view/15