Stefan Drees Dominik Gomm Helmut Plünnecke Wolfgang Reisig Rolf Walter Bibliography of Petri nets. 309-451 1986 conf/apn/1986 European Workshop on Applications and Theory of Petri Nets db/conf/apn/apn1986.html#DreesGPRW86 http://dx.doi.org/10.1007/3-540-18086-9_32