Víkingsson, G. A., Ólafsdóttir, D. and Sigurjónsson, J. (2003) “Geographical, and seasonal variation in the diet of harbour porpoises (Phocoena phocoena) in Icelandic coastal waters”, NAMMCO Scientific Publications. Tromsø, Norway, 5, pp. 243–270. doi: 10.7557/3.2829.