Using Linguistic Knowledge in Automatic Abstracting Horacio Saggion author 1999-06 text Proceedings of the 37th Annual Meeting of the Association for Computational Linguistics Association for Computational Linguistics College Park, Maryland, USA conference publication saggion-1999-using 10.3115/1034678.1034687 https://aclanthology.org/P99-1078/ 1999-06 596 601