Cabaj, Władysław, Justyna Bień, Katarzyna Goździk, and Bożena Moskwa. “Neospora Caninum in European Bison in Poland – the Current Research Status”. European Bison Conservation Newsletter 2 (September 1, 2009): 102–111. Accessed October 2, 2023. http://ojs.wisent.org/index.php/czasopismo/article/view/177.