Janice E. Cuny Hartmut Ehrig Gregor Engels Grzegorz Rozenberg Graph Gramars and Their Application to Computer Science, 5th International Workshop, Williamsburg, VA, USA, November 13-18, 1994, Selected Papers TAGT Lecture Notes in Computer Science 1073 Springer 1996 3-540-61228-9 db/conf/tagt/tagt1994.html