1. Brown, J. S., Moran, T . P . &Williams, M. D. (1982). The semantics ofprocedures: A cognitive basisfor trainingprocedural skills for complex maintenance (CIS Working Paper). Palo Alto, CA: Xerox Pa10 Alto Research Center.
2. Burton, R . (1985). Sketch: A drawingprogramfor Interlisp-D (Tech. Rep. No. ISL-7) Palo Alto, CA: Xerox Palo Alto Research Center.
3. deKleer, J. &Brown, J. S. (1985). A qualitative physics based on confluences. In J. R . Hobbs & R . C . Moore (Eds.), Formal theories of the commonsense world (pp. 109-184). Norwood, NJ: Ablex.
4. diSessa, A. A. (1983). Phenomenology and the evolution of intuition. In D. Gentner & A. L. Stevens (Eds.), Mental models (pp. 15-34). Hillsdale, NJ: Lawrence Erlbaum Associates, Inc.
5. diSessa, A. A. (1986). Models of computation. In D. A. Norman & S. W. Draper (Eds.), User centered system design: New perspectives on human-compukr interaction. Hillsdale, NJ: Lawrence Erlbaum Associates, Inc.