Fred Damerau:
Operating Statistics for the Transformational Question Answering System.
30-42
Volume 7,
Number 2,
April-June 1981
Graeme Hirst:
Discourse-Oriented Anaphora Resolution in Natural Language Understanding: A Review.
85-98
Stanley C. Kwasny, Norman K. Sondheimer:
Relaxation Techniques for Parsing Grammatically III-Formed Input in Natural Language Understanding Systems.
99-108