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♦ ¹Analysis of stomach contents of the porbeagle shark (Lamna nasus Bonnaterre) in the northwest Atlantic, W. N. Joyce, S. E. Campana, L. J. Natanson, N. E. Kohler, H. L. Pratt Jr, and C. F. Jensen, ICES Journal of Marine Science, 59: 1263–1269. 2002
♦ ²Feeding ecology of sympatric European shags Phalacrocorax aristotelis and great cormorants P. carbo in Iceland, Kristjan Lilliendahl, Jon Solmundsson, Marine Biology (2006) 149: 979–990