1. Jim Blythe and Manuela M. Veloso. An analysis of search techniques for a totally-ordered nonlinear planner. In Proceedings of the First International Conference on AI Planning Systems, College Park, MD, June 1992.
2. Daniel Borrajo, Juan P. Caraça-Valente, and José Luis Morant. Learning heuristics in planning. In Sixth International Conference on Systems Research, Informatics and Cybernetics, Baden-Baden, Germany, 1992.
3. Daniel Borrajo, Juan P. Caraça-Valente, and Juan Pazos. A knowledge compilation model for learning heuristics. In Proceedings of the Workshop on Knowledge Compilation of the 9th International Conference on Machine Learning, Scotland, 1992.
4. Daniel Borrajo and Manuela Veloso. Bounded explanation and inductive refinement for acquiring control knowledge. In Proceedings of the Third International Workshop on Knowledge Compilation and Speedup Learning, pages 21–27, Amherst, MA, June 1993.
5. Jaime G. Carbonell, and the PRODIGY Research Group. PRODIGY4.0: The manual and tutorial. Technical Report CMU-CS-92-150, School of Computer Science, Carnegie Mellon University, June 1992.