1. Mantegna RN, Stanley HE (2000) Introduction to econophysics: correlations and complexity in finance. Cambridge University Press, Cambridge
2. Saichev AI, Malevergne Y, Sornette D (2010) Theory of Zip’s Law and beyond. Springer, Berlin
3. Aoyama H, Fujiwara Y, Ikeda Y, Iyetomi H, Souma W (2010) Econophysics and companies: statistical life and death in complex business networks. Cambridge University Press, Cambridge
4. Pareto V (1897) Cours d’Économie Politique. Macmillan, London
5. Newman MEJ (2005) Power laws, Pareto distributions and Zipf’s law. Contemp Phys 46:323–351