Georg Grossmann Michael Schrefl Markus Stumptner Modelling Inter-Process Dependencies with High-Level Business Process Modelling Languages. 89-102 2008 APCCM http://www.crpit.com/confpapers/CRPITV79Grossmann.pdf conf/apccm/2008 db/conf/apccm/apccm2008.html#GrossmannSS08