Comparison of concentration of 17b-estradiol (E2) and total testosterone (TT) in serum in young males of European bison with or without spermiogenesis. European Bison Conservation Newsletter, [S. l.], v. 3, p. 17–24, 2010. Disponível em: https://ojs.wisent.org/index.php/czasopismo/article/view/143. Acesso em: 28 jul. 2026.