Attributes / relations provided by
♦ ¹Diet comparison of four ray species (Raja clavata, Raja brachyura, Raja montagui and Leucoraja naevus) caught along the Portuguese continental shelf, Inês Farias, Ivone Figueiredo, Teresa Moura, Leonel Serrano Gordo, Ana Neves and Bárbara Serra-Pereira, Aquat. Living Resour. 19, 105–114 (2006)
♦ ²Seasonal distribution of white-beaked dolphins (Lagenorhynchus albirostris) in UK waters with new information on diet and habitat use, Sarah J. Canning, M. Begoña Santos, Robert J. Reid, Peter G.H. Evans, Richard C. Sabin, Nick Bailey and Graham J. Pierce, Journal of the Marine Biological Association of the United Kingdom, 2008, 88(6), 1159–1166