In: Hawkins, R.; Crosbie, R.: Tools for the Simulation Profession. Proc. of the 1988 Conferences: Tools for the Simulationist and Simulation Software, pages 21-25. 1988.
Abstract: The authors describe an ongoing project to build a simulation tool, Modeler, based on the Petri net paradigm and having a graphically oriented user interface. They describe STAPNs, an extension of Petri nets, and micro-Modeler, a prototype simulation tool.