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
♦ ²Ontogenetic dietary shift and feeding strategy of Raja undulata Lacepède, 1802 (Chondrichthyes: Rajidae) on the Portuguese continental shelf, Teresa Moura, Ivone FigueIredo, Inês Farias, Bárbara Serra-Pereira, Ana Neves, Maria de Fátima Borges and Leonel Serrano Gordo, Scientia Marina 72(2) June 2008, 311-318