Well-Defined Stochastic Petri Nets. - Gianfranco Ciardo; Robert Zijal (MASCOTS, 1996)

Discrete Deterministic and Stochastic Petri Nets. - Robert Zijal; Gianfranco Ciardo; Günter Hommel (MMB, 1997)

Analysis of discrete time deterministic and stochastic Petri nets. - Robert Zijal (1997)