1. Anderson, J. R. (1993). Rules ofthe mind. Hillsdale, NJ: Lawrence Erlbaum Associates, Inc.
2. Bovair, S. & Kieras, D. E. (1985). A guide to pro ositional analysis for research on technical prose. In B. K. Britton Br J. B. Black kds.), Understanding expository text (pp. 315-362). Hillsdale, NJ: Lawrence Erlbaum Associates, Inc.
3. Carroll, J. M. (1990). lZe Nuremberg finnel: Deseing minimalist instruction for practical computer skills. Cambridge, MA: MIT Press.
4. End-user training and learning
5. The role of understanding in solving word problems