In: Proc. 4th Int. Workshop on Petri Nets and Performance Models (PNPM'91), Melbourne, Australia, pages 106-115. IEEE Comp. Soc. Press, December 1991.
Abstract: LOOPN is a language and simulator for specifying systems in terms of coloured timed Petri nets. It includes object-oriented features such as subtyping, inheritance and polymorphism which allow for the convenient modularisation of complex specifications. This paper briefly describes LOOPN and considers its application to the modelling of layered network protocols.