Figueroa, E., A. Gómez-Lobo, P. Jorquera, and F. Labrín. “Estimating the Impacts of a Public Transit Reform on Particulate Matter Concentration Levels: The Case of Transantiago in Chile”. Estudios De Economía, vol. 40, no. 1, Sept. 2013, pp. pp. 53-79, https://estudiosdeeconomia.uchile.cl/index.php/EDE/article/view/28347.