Ólafsdóttir, D., Víkingsson, G. A., Halldórsson, S. D., & Sigurjónsson, J. (2003). Growth and reproduction in harbour porpoises (<i>Phocoena phocoena</i>) in Icelandic waters. NAMMCO Scientific Publications, 5, 195–210. https://doi.org/10.7557/3.2747