Härkönen, Tero, Sophie Brasseur, Jonas Teilmann, Cecile Vincent, Rune Dietz, Kai Abt, and Peter Reijnders. “Status of grey seals along mainland Europe from the Southwestern Baltic to France”. NAMMCO Scientific Publications 6 (January 1, 2007): 57–68. Accessed December 19, 2024. https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2721.