Ropstad, Erik, Gaute Helland, Helge Hansen, Dag Lenvik, and Eva Tangen Solberg. “The effect of medroxyprogesterone acetate on pregnancy rates in reindeer calves (Rangifer tarandus)”. Rangifer 13, no. 3 (December 1, 1993): 163–167. Accessed April 25, 2024. https://septentrio.uit.no/index.php/rangifer/article/view/1108.