Attributes / relations provided by
♦ ¹Dietary composition and the potential of food competition between 0-group cod (Gadus morhua L.) and some other fish species in the littoral zone, Karen Fjøsne and Jakob Gjøsæter, ICES Journal of Marine Science, 53: 757–770. 1996
♦ ²del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.