Ólafsdóttir, Droplaug, Gísli A Víkingsson, Sverrir Daníel Halldórsson, and Jóhann Sigurjónsson. 2003. “Growth and Reproduction in Harbour Porpoises (<i>Phocoena phocoena</I>) in Icelandic Waters”. NAMMCO Scientific Publications 5 (July):195-210. https://doi.org/10.7557/3.2747.