1.
Lydersen C, Gjertz I. Studies of the ringed seal (Phoca hispida Schreber 1775) in its breeding habitat in Kongsfjorden, Svalbard. POLAR [Internet]. 1986Jan.5 [cited 2020Feb.16];4(1):57-63. Available from: https://polarresearch.net/index.php/polar/article/view/2492