Adamczewski, J., R. Chaplin, A. Gunn, and P. F. Flood. “Seasonal Effects of Diet on Serum and Urinary Nitrogen in Muskoxen”. Rangifer 13, no. 1 (October 1, 1993): 49–52. Accessed September 11, 2026. https://septentrio.uit.no/index.php/rangifer/article/view/1073.