Marion Murzek Gerhard Kramler Elke Michlmayr Structural Patterns for the Transformation of Business Process Models. 18 2006 conf/edoc/2006w EDOC Workshops http://doi.ieeecomputersociety.org/10.1109/EDOCW.2006.64 db/conf/edoc/edoc2006w.html#MurzekKM06