Natural Language Information Retrieval System Dialog L Bole author K Kochut author A Lesniewski author T Strzalkowski author 1983-09 text First Conference of the European Chapter of the Association for Computational Linguistics Antonio Zampoili editor Association for Computational Linguistics Pisa, Italy conference publication bole-etal-1983-natural https://aclanthology.org/E83-1032/ 1983-09