An economic and financial exploratory S. Cincotti, D. Sornette, P. Treleaven, S. Battiston, G. Caldarelli, C. Hommes and A. Kirman Eur. Phys. J. Special Topics, 214 (2012) 361-400 Published online: 05 December 2012 DOI: 10.1140/epjst/e2012-01699-6