Bjørge, Arne. “The Harbour Porpoise (Phocoena Phocoena) in the North Atlantic: Variability in Habitat Use, Trophic Ecology and Contaminant Exposure”. NAMMCO Scientific Publications 5 (July 1, 2003): 223–228. Accessed August 20, 2026. https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2749.