Proceedings of the 2nd conf. Parses the text into a knowledge base, which is filtered and abstracted to produce a summary graph. Steels L. and Campbell J.A. editions, Progress in artificial intelligence, Chichester, Ellis Horwood. Butterworths, London, U.K., 1981. This paper talks about how to pack as much information as possible into a summary sentence.
Paper talks about application to producing summaries of baseball games.
Although not directly related to text summarization, schemas can be useful for template-based systems. Expert Systems for Information Management 1 pp159-177. 1988.