Méndez Sayago, Johanna Mildred, and Jhon Alexander Méndez Sayago. “A Tradable Permit Systems for the Control of Pollution of Firms With Waste Water Discharges to the Sewerage Network”. Sociedad y Economía, no. 18 (May 15, 2010): 241–267. Accessed November 21, 2024. https://sociedadyeconomia.univalle.edu.co/index.php/sociedad_y_economia/article/view/4171.