Falko Bause/Pieter Kritzinger: Stochastic Petri nets.
Vieweg 1996, 250p. 3-528-05535-9. DM 98.

Marco Ajmone Marsan (ed.): Modelling with generalized stochastic Petri nets.
Wiley 1996. 0-471-93059-8. $73.