1. Chaos and Life. Complexity and Order in Evolution and Thought;Bird,2003
2. Sociologie Des Crises Politiques;Dobry,1986
3. Crisis Management in a Complex World;Gilipin,2008
4. Spatial and temporal patterns in civil violence: Guatemala, 1977–1986;Gulden;Politics Life Sci.,2002
5. O. Becerra, N. Johnson, P. Meier, J. Restrepo, M. Spagat, Natural disasters, casualties and power laws: a comparative analysis with armed conflict, in: Proceedings of the Annual Meeting of the American Political Science Association, Loews Philadelphia, and the Pennsylvania Convention Center, Philadelphia, USA, 2006.