H. Krahn, B. Rumpe, and S. Völkel. Proceedings of the 7th OOPSLA Workshop on Domain-Specific Modeling (DSM' 07), Montreal, Quebec, Canada, Technical Report TR-38, Jyväskylä University, Finland, (2007)
A. Aho, R. Ethis, and J. Ullmann. Oldenbourg, Wien, 2 edition, (1999)German translation of "Compilers, Principles, Techniques and Tools" (see aho86)
isbn = 3-486-25294-1.
H. Ehrig. Graph Grammars and Their Application to Computer Science and Biology, volume 73 of Lecture Notes in Computer Science, page 1--69. Springer-Verlag, (1979)