1. K. Astron, H. Elmquist, S. Mattson, Evolution of continuous time modeling and simulation, in: 12th ESM, Manchester, June 98.
2. System theoretic formalisms for combined discret-continuous system simulation;Praehofer;Int. J. Gen. Syst.,1991
3. Multifaceted Modelling and Discrete Event Simulation;Zeigler,1984
4. Object-oriented Simulation with Hierarchical, Modular Models;Zeigler,1990
5. B. Zeigler, DEVS representation of dynamical systems, in: Proceedings of the IEEE, vol. 77, 1989, pp. 72–80.