TY  - BOOK
AU  - Ehrig H
ED  - International Workshop on Graph Grammars and Their Applicationto computer Science( 4th : 1990 : Bremen )
ED  - International Workshop on Graph Grammars and Their Applicationto computer Science 4th
TI  - Graph grammar and their application to computer science : proceedings
SN  - 3-540-54478-X
U1  - 5.131 
PY  - 1991///
CY  - Berlin
PB  - Springer Verlag
KW  - Computer science
KW  - Graph grammars
ER  -