1. Brandt, Per Age, n.d. On two material anchors. Unpublished email, May 2002.
2. Intelligence without representation;Brooks;Artificial Intelligence,1991
3. Byrne, Richard W., Whiten, Andrew (Eds.), 1988. Machiavellian Intelligence: Social Expertise and the Evolution of Intellect in Monkeys, Apes, and Humans. Oxford University Press, New York.
4. Culturally based reasoning;D’Andrade,1989
5. Mappings in Thought and Language;Fauconnier,1997