Maya Ochoa, Cecilia, and Gabriel Ignacio Torres Avendaño. “Random Walks Are Not from This World. Theory and Bibliographical Revision on Empirical Evidence”. Revista Universidad EAFIT, vol. 41, no. 138, June 2012, pp. 65-83, https://publicaciones.eafit.edu.co/index.php/revista-universidad-eafit/article/view/857.