9Cowan, G , D Pines, and D Mdtzer, eds. Complexity:Metaphors, Models,and Reality, SFI Studies in the Sciences of Complexity , Proc. Vol. XIX, Addison - Wesley, 1994,pp, 497 - 513.
10Heylighen, Francis, Johan Bollen and Alexander Riegler,eds. The Evolution of Complexity, Dordrecht: Kluwer Academic Publishers, 1999, p,7.
