Rivero Ortega, Ricardo. “Administrative Problems in the New Metropolitan Areas: The Absence of a Sufficient Regulatory Response in the Autonomous Community of Castilla Y León”. Revista de Estudios de la Administración Local y Autonómica, no. 300-301 (June 1, 2011). Accessed November 11, 2026. https://revistasonline.inap.es/index.php/REALA/article/view/9302.