Cunha Marques, R. and Garzón Contreras, F. (2007) “Performance-based Potable Water and Sewer Service Regulation.The Regulatory Model”, Cuadernos de Administración, 20(34). Available at: https://revistas.javeriana.edu.co/index.php/cuadernos_admon/article/view/4054 (Accessed: 24 May 2025).