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Citations
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Buttiker, W. (1973). [Preliminary report on eye-frequenting butterflies in the Ivory Coast]. Rev Suisse Zool, 80(1), 1–43.
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McGonigle, B. (1985). Can apes learn to count? (Vol. 315).
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Crook, J. H. (1983). On attributing consciousness to animals. Nature, 303(5912), 11–14.
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Goodall J. (1964). Tool-using and aimed throwing in a community of free-living chimpanzees. Nature, 201, 1264.
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Sugiyama Y. (1994). Tool use by wild chimpanzees. Nature, 376, 327.
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