“Creation and Evolution of Oporto’s City Centre (1850-2001): Approach to a Transdiciplinar Analysis of the Urba Centre As a Complete Social Fact”. Ciudades, no. 12 (December 1, 2017): 243–249. Accessed January 8, 2026. https://revistas.uva.es/index.php/ciudades/article/view/1235.