Attributes / relations provided by
♦ ¹Energy flow of a boreal intertidal ecosystem, the Sylt-Rømø Bight, Dan Baird, Harald Asmus, Ragnhild Asmus, Mar Ecol Prog Ser 279: 45–61, 2004
♦ 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