Kirsten Berkenkötter Stefan Bisanz Ulrich Hannemann Jan Peleska Executable HybridUML and Its Application to Train Control Systems. 145-173 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3147&spage=145 2004 conf/dfg/2004 SoftSpez Final Report db/conf/dfg/softspez2004.html#BerkenkotterBHP04