Moen, R., J. Pastor, and Y. Cohen. “EFFECTS OF BEAVER AND MOOSE ON THE VEGETATION OF ISLE ROYALE NATIONAL PARK”. Alces: A Journal Devoted to the Biology and Management of Moose, vol. 26, Jan. 1990, pp. 51-63, https://alcesjournal.org/index.php/alces/article/view/1147.