Lázaro y Perez-Toledo, Juan Manuel de. “The M-40 Ring Road, Noise Pollution, Speculation and Environmental Awareness”. Ciudad y Territorio Estudios Territoriales, no. 117-118 (December 21, 1998): 709–720. Accessed May 19, 2024. https://recyt.fecyt.es/index.php/CyTET/article/view/85513.