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♦ ¹Šantić, M., Podvinski, M., Pallaoro, A., Jardas, I. and Kirinčić, M. (2009), Feeding habits of megrim, Lepidorhombus whiffiagonis (Walbaum, 1792), from the central Adriatic Sea. Journal of Applied Ichthyology, 25: 417–422
♦ 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