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♦ ¹Diet of Pygmy Sperm Whales (Kogia breviceps) in the Hawaiian Archipelago, Kristi West, William Walker, Robin Baird, Whitney White, Gregg Levine, Eric Brown, David Schofield, MARINE MAMMAL SCIENCE, 25(4): 931–943 (October 2009)
♦ ²Niche Partitioning, Distribution And Competition In North Atlantic Beaked Whales, Colin D. MacLeod, A thesis submitted to the School of Biological Sciences for a degree of Doctor of Philosophy at the University of Aberdeen, Aberdeen, UK. January 2005
♦ ³Insights into the diet of beaked whales from the atypical mass stranding in the Canary Islands in September 2002, M.B. Santos, V. Martin, M. Arbelo, A. Fernández and G.J. Pierce, J. Mar. Biol. Ass. U.K. (2007), 87, 243–251