Arthur, Stephen M., Kenneth R. Whitten, Francis J. Mauer, and Dorothy Cooley. “Modeling the Decline of the Porcupine Caribou Herd, 1989-1998: the Importance of Survival Vs. Recruitment”. Rangifer 23, no. 5 (April 1, 2003): 123–130. Accessed November 27, 2021. https://septentrio.uit.no/index.php/rangifer/article/view/1693.