1. Exploring synergies of knowledge management and case-based reasoning,1999
2. Aha, D. W., & Breslow, L. A. (1997). Refining conversational case libraries. Proceedings of the Second International Conference on Case-Based Reasoning (pp. 267–278). Providence, RI: Springer.
3. Aha, D. W., & Weber, R. (1999). Lessons learned links. Available at [http://www.aic.nrl.navy.mil/~aha/lessons].
4. Intelligent lessons learned systems;Aha,2000
5. Applying textual case-based reasoning and information extraction in lessons learned systems;Ashley,2000