Ruth Breu Michael Hafner Barbara Weber Andrea Nowak Model Driven Security for Inter-organizational Workflows in e-Government. 122-133 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3416&spage=122 2005 conf/tcgov/2005 TCGOV db/conf/tcgov/tcgov2005.html#BreuHWN05