Parker, Howard, Frank Rosell, and Per Øyvind Gustavsen. “Errors Associated With Moose-Hunter Counts of Occupied Beaver Castor Fiber Lodges in Norway”. Fauna norvegica 22 (December 31, 2002): 23-31. Accessed November 22, 2024. https://www.ntnu.no/ojs/index.php/fauna_norvegica/article/view/5986.