Hartmut Ehrig Julia Padberg Ulrike Prange Annegret Habel Adhesive High-Level Replacement Systems: A New Categorical Framework for Graph Transformation. 1-29 2006 74 Fundam. Inform. 1 http://iospress.metapress.com/openurl.asp?genre=article&issn=0169-2968&volume=74&issue=1&spage=1 db/journals/fuin/fuin74.html#EhrigPPH06