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♦ ¹Food habits of the longnose skate, Raja rhina (Jordan and Gilbert, 1880), in central California waters, Heather J. Robinson, Gregor M. Cailliet, David A. Ebert, Environ Biol Fish (2007) 80:165–179
♦ ²The Diets and Feeding Habits of Some Deep-Water Benthic Skates (Rajidae) in the Pacific Waters Off the Northern Kuril Islands and Southeastern Kamchatka, Alexei M. Orlov, Alaska Fishery Research Bulletin 5(1):1–17. 1998