Smits, Cor M. M., Richard M. P. Ward, and Douglas G. Larsen. “HELICOPTER OR FIXED-WING AIRCRAFT: A COST-BENEFIT ANALYSIS FOR MOOSE SURVEYS IN YUKON TERRITORY”. Alces: A Journal Devoted to the Biology and Management of Moose 30 (January 1, 1994): 45–50. Accessed April 24, 2024. https://www.alcesjournal.org/index.php/alces/article/view/933.