1. Bates, M., Moser, M. G. & Stallard, D. (1986). The IRUS Transportable Natural Language Database Interface. In Kerschberg, L. (ed.) Expert Database System, Proceedings of the First International Workshop, 617–630. Kiawah Island, SC: Benjamin/Cummings.
2. Brachman, R. J. & Schmolze, J. G. (1985). An Overview of the KL-ONE Knowledge Representation System. Cognitive Science
9: 171–216.
3. Brown, F. M., (ed.) (1987). The Frame Problem in Artificial Intelligence, Proceedings of the 1987 Workshop. Morgan Kaufmann.
4. Chin, D. N. (1988). Intelligent Agents as a Basis for Natural Language Interfaces. Technical Report UCB/USD 88/396, Computer Science Division of EECS, University of California at Berkeley.
5. Douglass, R. J. & Hegner, S. J. (1982). An Expert Consultant for the UNIX Operating System: Bridging the Gap between the User and Command Language Semantics. In Proceedings of the Fourth CSCSI/SCEIO Conference, 119-127. Saskatoon: Canadian Society for the Computational Study of Intelligence.