1.

電子ブック
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1. Extensions of Logic Programming : 5th International Workshop, ELP '96 Leipzig, Germany, March 28–30, 1996 Proceedings
edited by Roy Dyckhoff, Heinrich Herre, Peter Schroeder-Heister
出版情報: Berlin, Heidelberg : Springer-Verlag, 1996
シリーズ名: Lecture Notes in Computer Science, Lecture Notes in Artificial Intelligence ; 1050
オンライン: http://dx.doi.org/10.1007/3-540-60983-0
2.

電子ブック
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2. Extensions of Logic Programming : International Workshop Tübingen, FRG, December 8–10, 1989 Proceedings
edited by Peter Schroeder-Heister
出版情報: Berlin, Heidelberg : Springer-Verlag, 1991
シリーズ名: Lecture Notes in Computer Science, Lecture Notes in Artificial Intelligence ; 475
オンライン: http://dx.doi.org/10.1007/BFb0038689