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♦ ¹Groundfish Food Habits and Predation on Commercially Important Prey Species in the Eastern Bering Sea From 1997 Through 2001, Lang, G. M., P. A. Livingston, and K. A. Dodd, 2005, U.S. Dep. Comer., NOAA Tech. Memo. NMFS-AFSC-158, 230 p.
♦ ²The diet of king eiders wintering in Nuuk, Southwest Greenland, with reference to sympatric wintering common eiders, Flemming R. Merkel, Anders Mosbech, Sarah E. Jamieson, Knud Falk, Polar Biology Volume 30, Number 12, 1593-1597 (2007)