Frank Hänsel Jan Poliak Roman Slovák Eckehard Schnieder Reference Case Study "Traffic Control Systems" for Comparison and Validation of Formal Specifications Using a Railway Model Demonstrator. 96-118 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3147&spage=96 2004 conf/dfg/2004 SoftSpez Final Report db/conf/dfg/softspez2004.html#HanselPSS04