In: Adv. Model. Simul. (France), Vol. 14, No. 2, pages 57-64. 1988.
Abstract: The properties of occurrence nets (O-nets), occurrence-alternative nets (A-nets) and sequential-alternative nets (S-nets) are studied. The conditions of M-density of A-nets are specified. An algorithm of decomposition of A-nets into maximum O- and S-subnets is suggested.