Remco M. Dijkman Marlon Dumas Luciano García-Bañuelos Business Process Graphs: Similarity Search and Matching. 421-437 2011 Graph Data Management http://dx.doi.org/10.4018/978-1-61350-053-8.ch018 books/igi/Sakr2011 db/books/collections/Sakr2011.html#DijkmanDG11