UNL/USL: MUC-3 Test Results and Analysis Jitender S Deogun author Vijay V Raghavan author 1991 text Third Message Understanding Conference (MUC-3): Proceedings of a Conference Held in San Diego, California, May 21-23, 1991 conference publication deogun-raghavan-1991-unl https://aclanthology.org/M91-1019/ 1991