Lydersen, Christian, Morten Skrede Ryg, and Mike O. Hammill. “Differences in Haul-Out Pattern in Two Nursing Ringed Seal Phoca Hispida Pups”. Fauna norvegica 14 (December 31, 1993): 47-49. Accessed November 22, 2024. https://www.ntnu.no/ojs/index.php/fauna_norvegica/article/view/6037.