1. Aggarwal, S. (1979), “Composition spaces and simplification”, in Zeigler, Elzas, Oren, Klir (Eds.), Methodology in systems modelling and simulation, North-Holland, Amsterdam, Netherlands, pp. 465–493.
2. Averbukh, A. (1979), “General systems as a synthesis..”, in Loc. cit. sub Aggarwal (1979), pp. 507–511.
3. Bekey, G.A. (1977), “Models and reality: Some reflections on the art and science of simulation”, Simulation, 29, 5, pp. 161–164.
4. Belogus, D. (1980), Concepts and software tools for multi-facetted system simul ation, Report Applied Mathematics Dept., The Weizmann Institute of Science, Rehovot, Israel.
5. Clark, K.L. and Cowell, D.F. (1976), Programs, machines and computation, McGraw-Hill.