Didier Lime Olivier H. Roux Charlotte Seidner Louis-Marie Traonouez Romeo: A Parametric Model-Checker for Petri Nets with Stopwatches. 54-57 2009 TACAS http://dx.doi.org/10.1007/978-3-642-00768-2_6 conf/tacas/2009 db/conf/tacas/tacas2009.html#LimeRST09