Reijnders, Peter JH, Sophie MJM Brasseur, Svend Tougaard, Ursula Seibert, Thomas Borchardt, and Michael Stede. “Population development and status of harbour seals (<i>Phoca vitulina</i>) in the Wadden Sea”. NAMMCO Scientific Publications 8 (September 1, 2010): 95–105. Accessed November 21, 2024. https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2677.