Duane A. Bailey Janice E. Cuny An Approach to Programming Process Interconnections Structures: Aggregate Rewriting Graph Grammars. 112-123 1987 conf/parle/1987-2 PARLE (2) db/conf/parle/parle87-2.html#BaileyC87 http://dx.doi.org/10.1007/3-540-17945-3_6