“Intermodal Criteria to Include Non-Motorized Transport Modes in the Influence Zone of Integral System of Transport of Metropolitan Area of San Salvador”. TRIM. Tordesillas, revista de investigación multidisciplinar, no. 17 (January 26, 2020): 63–79. Accessed January 16, 2026. https://revistas.uva.es/index.php/trim/article/view/4200.