1. Le Cours d'Economie Politique;Pareto,1897
2. Human Behavior and the Principle of Least Effort;Zipf,1947
3. Skew Distributions and the Sizes of Business Firms;Ijiri,1977
4. The Fractal Geometry of Nature;Mandelbrot,1983
5. Scaling the volatility of GDP growth rates;Canning;Econ. Lett.,1998