Vocalizatons of chimpanzees in non-caged captivity

This publication has 5 references indexed in Scilit:

• THE SITUATIONS THAT EVOKE VOCALIZATION IN PRIMATES
  Annals of the New York Academy of Sciences, 1962
• Imitation in a home-raised chimpanzee.
  Journal of Comparative and Physiological Psychology, 1952
• Judgment of Facial Expression of Emotion in the Chimpanzee
  The Journal of Social Psychology, 1935
• Chimpanzee intelligence and its vocal expressions, by Robert M. Yerkes and Blanche W. Learned.
  Published by Smithsonian Institution ,1925
• The expression of the emotions in man and animals.
  Published by American Psychological Association (APA) ,1872