1.

電子ブック
ＥＢ
1. Graph Grammars and Their Application to Computer Science : 4th International Workshop Bremen, Germany, March 5–9, 1990 Proceedings
edited by Hartmut Ehrig, Hans-Jörg Kreowski, Grzegorz Rozenberg
出版情報: Berlin, Heidelberg : Springer-Verlag, 1991
シリーズ名: Lecture Notes in Computer Science ; 532
オンライン: http://dx.doi.org/10.1007/BFb0017372
2.

電子ブック
ＥＢ
2. Graph-Grammars and Their Application to Computer Science : 3rd International Workshop Warrenton, Virginia, USA, December 2–6, 1986
edited by Hartmut Ehrig, Manfred Nagl, Grzegorz Rozenberg, Azriel Rosenfeld
出版情報: Berlin, Heidelberg : Springer-Verlag, 1987
シリーズ名: Lecture Notes in Computer Science ; 291
オンライン: http://dx.doi.org/10.1007/3-540-18771-5