Benoit B. Mandelbrot (2013). “Fractals and Scaling in Finance: Discontinuity, Concentration, Risk. Selecta Volume E”, p.16, Springer Science & Business Media
Pierre-Simon Laplace (2012). “Pierre-Simon Laplace Philosophical Essay on Probabilities: Translated from the fifth French edition of 1825 With Notes by the Translator”, p.124, Springer Science & Business Media