Halldórsson, Sverrir Daníel, and Gísli Arnór Víkingsson. “Analysis of Seasonal Changes in Reproductive Organs from Icelandic Harbour Porpoises (Phocoena Phocoena)”. NAMMCO Scientific Publications 5 (July 1, 2003): 121–141. Accessed August 20, 2026. https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2744.