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♦ ¹Seasonal Variations in Diet and Foraging Behavior of Ateles chamek in a Southern Amazonian Tropical Forest, Robert B. Wallace, International Journal of Primatology, Vol. 26, No. 5, October 2005, pp. 1053-1075
♦ ²Seasonal variation in the diets of white-faced and bearded sakis (Pithecia pithecia and Chiropotes satanas) in Guri Lake, Venezuela, Marilyn A. Norconk, Adaptive Radiations of Neotropical Primates 1996, pp 403-423