Louis-Marie Traonouez Didier Lime Olivier H. Roux Parametric Model-Checking of Time Petri Nets with Stopwatches Using the State-Class Graph. 280-294 2008 FORMATS http://dx.doi.org/10.1007/978-3-540-85778-5_20 conf/formats/2008 db/conf/formats/formats2008.html#TraonouezLR08