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Tojo, S., "A Type-theorerical Analysis of Complex Verb Translation", 13th International Conference on Computational Linguistics (COLING '90), 1990. Saito, Y. and Tojo, S. and Komiya, S., "Conceptural Clustering Based on Affinity", Proceedings of the 10th European Conference of Artificial Intelligence (ECAI'92) The European Coordinating Committee for Artificial Intelligence (ECCAI), 1992. 部分的関係からのクラスタリング: 直観的データ解析の枠組. 共著 平成5年11月 情報処理学会論文誌 vol.34, no.11, pp.2354-2365. S. Tojo, "Free-ordered Categorial Unification Grammar on Chemical Abstract Machine", 15th International Conference on Computational Linguistics (COLING '94), 1994