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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