1. Aleksić, Z. 2000. “Artificial Life: Growing Complex Systems,” in T.R.J. Bossomaier and D.G. Green eds. Complex Systems, Cambridge, UK; Cambridge University Press: 91–126.
2. Allen, P.M. 1988. “Evolution: Why the Whole is Greater than the Sum of the Parts,” in W. Wolff, C.J. Soeder, and F.R. Drepper eds. Ecodynamics. Berlin, Germany; Springer-Verlag: 3–30.
3. Andergassen, R. 2001. “Economic Growth and Aggregate Fluctuations,” Quaderni del Dipartimento di Siena, N. 318, University of Siena (Italy).
4. Andergassen, R., P. Nijkamp, and A. Reggiani. 2003. “Analysis of Regional Labour Market Dynamics: In Search of Indications for Self-Organised Criticality,” Journal of Geographical Systems, 5 (3): 275–290.
5. Baas, N. 1994. “Emergence, Hierarchies, and Hyperstructure,” in C.G. Langton ed. Artificial Life III. Reading, MA; Addison Wesley: 515.