“…Collectively, IDEF0, IDEF3 and Petri net representations provide a 'rich picture' of enterprise requirements which can be analysed, developed and reused over time by members of project and systems engineering teams. Potentially, also, these specialist representations can be linked to other multiperspective representations of systems of resources as required by specialist system designers, implementers, managers, users and developers [22]. Hence, there is much indirect evidence of a general need for transformations between different modelling constructs and modelling systems.…”