¹ Eugene Syriani, Modelling syntax and semantics of piDEMOS in AToM³, MSDL Summer Presentations, 2006

² Hans Vangheluwe, The Discrete EVent System specifcation (DEVS) formalism, Modelling and Simulation Lecture Notes, 2002

³ G. Birtwistle and C. Tofts, Operational Semantics Of Process-Oriented Simulation Languages --Part 1: piDemos, 1993

⁴ Marc Provost, Himesis: A Hierarchical Subgraph Matching Kernel for Model Driven Development, 2005