Cunha Marques, Rui, and Fabio Garzón Contreras. “Performance-Based Potable Water and Sewer Service Regulation.The Regulatory Model”. Cuadernos de Administración 20, no. 34 (December 11, 2007). Accessed May 24, 2025. https://revistas.javeriana.edu.co/index.php/cuadernos_admon/article/view/4054.