Koski, W. R., P. A Abgrall, and S. B. Yazvenko. “An Inventory and Evaluation of Unmanned Aerial Systems for Offshore Surveys of Marine Mammals”. J. Cetacean Res. Manage. 11, no. 3 (February 14, 2023): 239–247. Accessed September 28, 2025. https://journal-iwc-live.netxtra.dev/index.php/jcrm/article/view/603.