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Sources

• D'Amato, M.R. and M. Colombo. "Representation of serial order in monkeys (Cebus paella)." J Exp Psychol Anim Behav Process. 1988 Apr;14(2):131-9.
• Devine, J.V. et al. "Stimulus similarity and order as factors in visual short-term memory in nonhuman primates." J Exp Psychol Anim Behav Process. 1979 Oct;5(4):335-54. (April 14, 2008)
  http://www.ncbi.nlm.nih.gov/pubmed/119027
• O'Neil, Daniela K., Alison Gopnik. " Young children's ability to identify the sources of their beliefs." Developmental Psychology, Vol 27(3), May 1991. pp. 390-397.
• Parker, BK. "Reproduction memory of two-event sequences in pigeons." J Exp Anal Behav. 1984 March; 41(2): 135-141 (April 14, 2008)
  http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=134802.
• Rachlin, Howard, Leonard Green. "Commitment, choice and self control." J Exp Anal Behav. 1972 January; 17(1): 15-22. (April 15, 2008)
  http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=1333886
• Roberts, William A. "Are Animals Stuck in Time?" Psychological Bulletin, Vol 128(3), May 2002. pp. 473-489.
• Roberts, William A. et al. "Episodic-Like Memory in Rats: Is it Based on When or How Long Ago?" Science 4 April 2008: Vol. 320. no. 5872, pp. 113 - 115 DOI: 10.1126/science.1152709 (April 11, 2008)
  http://www.sciencemag.org/cgi/content/abstract/320/5872/113
• Saksida, Lisa M. and Donald Wilkie. "Time-of-day discrimination by pigeons, Columbia livea." Animal Learning & Behavior, Vol 22(2), May 1994. pp. 143-154.
• Shapiro, Fred. "The Yale Book of Quotations." Yale University Press. 2006. (April 11, 2008)
  http://books.google.com/books?id=w5-GR-qtgXsC&dq=The+Yale+Book+
  of+Quotations&client=firefox-a&source=gbs_summary_s&cad=0
• Silberberg, A. et al. "Natural choice in nonhuman primates." J Exp Psychol Anim Behav Process. 1998 Apr;24(2):215-28. (April 15, 2008)
  http://www.ncbi.nlm.nih.gov/pubmed/9556910
• Straub, R.O. "Generalization of serial learning in the pigeon." Animal Learning & Behavior, Vol. 9(4), Nov 1981. pp. 454-468.
• Tobin, Henry and John J. Chelnois. "Choice in self-control paradigms using rats." Psychological Record; Summer93, Vol. 43 Issue 3, p441, 14p.