Lundström, Karl, Olle Hjerne, Karin Alexandersson, and Olle Karlsson. “Estimation of Grey Seal (Halichoerus Grypus) Diet Composition in the Baltic Sea”. NAMMCO Scientific Publications 6 (January 1, 2007): 177–196. Accessed August 20, 2026. https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2733.