Osinga, Nynke, and Pieter ‘t Hart. “Harbour Seals (<i>Phoca vitulina</I&gt;) and Rehabilitation”. NAMMCO Scientific Publications 80 (September 1, 2010): 355-372. Accessed May 27, 2019. https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2699.