@articleHauser_Friess_Kuster_Vanhatalo_2008, title=An Incremental Approach to the Analysis and Transformation of Workflows Using Region Trees, volume=38, DOI=10.1109/tsmcc.2008.919178, number=3, journal=IEEE Transactions on Systems, Man, and Cybernetics, Part C (Applications and Reviews), publisher=Institute of Electrical and Electronics Engineers (IEEE), author=Hauser, Rainer and Friess, Michael and Kuster, Jochen and Vanhatalo, Jussi, year=2008, pages=347–359