Ropstad, Erik, and Dag Lenvik. “The use of Cloprostenol and prostaglandin F2alpha to induce luteolysis in reindeer calves (Rangifer tarandus)”. Rangifer 11, no. 1 (October 1, 1991): 13–16. Accessed April 20, 2024. https://septentrio.uit.no/index.php/rangifer/article/view/968.