Riedl, J., and C. Heermann. “Immobilization of Confined European Bison With a Medetomidine - zolazepam/Tiletamine - Butorphanol Combination Using Readily Available Veterinary Medicinal Products”. European Bison Conservation Newsletter, vol. 14, Sept. 2022, pp. 11-22, http://ojs.wisent.org/index.php/czasopismo/article/view/100.