Tedesco, S. C., P. F. Flood, D. J. Morton, and R. J. Reiter. “Seasonal melatonin and luteinizing hormone rhythms in muskoxen at 52° N”. Rangifer 12, no. 3 (October 1, 1992): 197–201. Accessed April 26, 2024. https://septentrio.uit.no/index.php/rangifer/article/view/1045.