The following publications are possibly variants of this publication:
- Syntactic and Semantic Knowledge in the DELPHI Unification GrammarRobert J. Bobrow, Robert Ingria, David Stallard. naacl 1990: [doi]
- Unification-Based Semantic Interpretation in the BBN Spoken Language SystemDavid Stallard. naacl 1989: [doi]
- BBN HARC and DELPHI Results on the ATIS Benchmarks - February 1991Steve Austin, Damaris M. Ayuso, Madeleine Bates, Robert J. Bobrow, Robert Ingria, John Makhoul, P. Placeway, Richard M. Schwartz, David Stallard. naacl 1991: [doi]