Serge Haddad Lynda Mokdad Patrice Moreaux A New Approach to the Evaluation of Non Markovian Stochastic Petri Nets. 221-240 2006 conf/apn/2006 ICATPN http://dx.doi.org/10.1007/11767589_13 db/conf/apn/icatpn2006.html#HaddadMM06