Books (to be overhauled):

D. Sornette
Critical Phenomena in Natural Sciences: Chaos, Fractals, Self-organization and Disorder: Concepts and Tools
Springer-Verlag, 2nd Edition, 2003.

The full text is also available on Google books here.

P. Ball
Critical Mass: How One Thing Leads to Another
Farra, Straus, and Giroux, 2004.


General themes:

P. W. Anderson (1972).
More is different
Science, Vol. 177, pp. 393-396.

M. A. Bedau (1997).
Weak Emergence
In James Tomberlin, ed., Philosophical Perspectives: Mind, Causation, and World, vol. 11, pp. 375-399. Oxford: Blackwell Publishers.

I. Couzin (2007).
Collective Minds
Nature, Vol 445, p. 715.

J. M. Epstein (2008).
Why Model?
Santa Fe Institute Working Paper.


J. Carlson and J. Doyle (2002).
Complexity and Robustness
Proc. Natl. Acad. Sci., Vol 99, p 2538-2545.

M. Mitzenmacher (2003).
A brief history of generative models for power law and lognormal distributions
Internet Mathematics, Vol 1, pp. 226-251.

M. E. J. Newman (2006).
Power laws, Pareto distributions and Zipf's law
arXiv preprint.

A. Clauset, C. R. Shalizi, and M. E. J. Newman (2007).
Power-law distributions in empirical data
arXiv preprint

Online writings and gatherings of writings:

The Complexity Digest rounds up articles from across the spectrum of complex systems.

Peruse Cosma Shalizi's notebooks for a sober view of complex systems and all things related. See in particular:
Complexity Measures