Interaction of Knowledge Sources in a Portable Natural Language Interface Carole D Hafner author 1984-07 text 10th International Conference on Computational Linguistics and 22nd Annual Meeting of the Association for Computational Linguistics Association for Computational Linguistics Stanford, California, USA conference publication hafner-1984-interaction 10.3115/980491.980505 https://aclanthology.org/P84-1014/ 1984-07 57 60