Czykier, Elżbieta. “Difficulties With the Choice of Proper Method for Determination of Serum Levels of Total Testosterone (TT) in European Bison Males”. European Bison Conservation Newsletter 2 (September 1, 2009): 1–10. Accessed April 26, 2024. http://ojs.wisent.org/index.php/czasopismo/article/view/176.