1. Ahmed, E., Hegazi, A. S. (2009). Global crises from the perspective of complex adaptive systems. Notices of the American Mathematical Society, 343.
2. Arthur, W. B. (1999). Complexity and the economy. Science, 284, 107–109.
3. Arthur, W. B., Durlauf, S. N., & Lane, D. A. (Eds.). (1997). The economy as an evolving complex system II. Reading: Addison-Wesley.
4. Ashby, W. R. (1956). An introduction to cybernetics. London: Chapman & Hall.
5. Axelrod, M. (2011). Climate change and global fisheries management: Linking issues to protect ecosystems or to save political interests? Global Environmental Politics, 11(3), 64–84.