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♦ ¹Geographical variation in the diet of the Antarctic fur seal Arctocephalus gazella, R. Casaux, A. Baroni, F. Arrighetti, A. Ramón, A. Carlini, Polar Biol (2003) 26: 753–758
♦ ²Diet of the south polar skua Catharacta maccormicki and the brown skua C. antarctica lonnbergi at Cierva Point, Antarctic Peninsula, Silvina L. Malzof, Rubén D. Quintana, Polar Biol (2008) 31:827–835
♦ ³DENSITIES OF ANTARCTIC SEABIRDS AT SEA AND THE PRESENCE OF THE KRILL EUPHAUSIA SUPERBA, BRYAN S. OBST, The Auk 102: 540-549. July 1985
♦ ⁴Food of emperor penguins (Aptenodytes forsteri) in the western Ross Sea, Antarctica, Y. Cherel and G. L. Kooyman, Marine Biology (1998) 130: 335-344
♦ ⁵Summer diet of king penguins (Aptenodytes patagonicus) at the Falkland Islands, southern Atlantic Ocean, Yves Cherel, Klemens Pütz and Keith A. Hobson, Polar Biol (2002) 25: 898–906