Tutorial Introduction to the Algebraic Approach of Graph Grammars Based on Double and Single Pushouts.

Hartmut Ehrig Martin Korff Michael Löwe Tutorial Introduction to the Algebraic Approach of Graph Grammars Based on Double and Single Pushouts. 24-37 1990 conf/gg/1990 Graph-Grammars and Their Application to Computer Science db/conf/gg/gg1990.html#EhrigKL90