Philippe Darondeau Maciej Koutny Marta Pietkiewicz-Koutny Alexandre Yakovlev Synthesis of Nets with Step Firing Policies. 112-131 2008 Petri Nets http://dx.doi.org/10.1007/978-3-540-68746-7_11 conf/apn/2008 db/conf/apn/pn2008.html#DarondeauKPY08