Riseth, Jan Åge, Bernt Johansen, and Arild Vatn. “Aspects of a Two-Pasture — Herbivore Model”. Rangifer 24, no. 4 (April 1, 2004): 65-81. Accessed May 26, 2019. https://septentrio.uit.no/index.php/rangifer/article/view/1725.