Comparison of Logic Programming Based Natural Language Parsing Systems. - Toshiyuki Okunishi; Ryôichi Sugimura; Yuji Matsumoto 001 (Natural Language Understanding and Logic Programming Workshop, 1987)

A Software Environment for Research into Discourse Understanding Systems. - Ryôichi Sugimura; Kôiti Hasida; Kouji Akasaka; Kôzi Hatano; Yukihiro Kubo; Toshiyuki Okunishi (FGCS, 1988)

Evaluation of Importance of Sentences based on Connectivity to Title. - Takehiko Yoshimi; Toshiyuki Okunishi; Takahiro Yamaji; Yoji Fukumochi (COLING-ACL, 1998)