Lenvik, Dag, Esben Bø, and Anders Fjellheim. “Relationship Between the Weight of Reindeer Calves in Autumn and Their mother’s Age and Weight in the Previous Spring”. Rangifer 8, no. 1 (June 1, 1988): 20–24. Accessed May 17, 2022. https://septentrio.uit.no/index.php/rangifer/article/view/733.