Pinheiro, António José, and Fernando Paulino. “Urban Tourism and World Heritage: Relations and Effects of the Classification”. PASOS Revista de Turismo y Patrimonio Cultural 20, no. 5 (October 2, 2022): 1243–1254. Accessed August 18, 2024. https://ojsull.webs.ull.es/ojs/index.php/Revista/article/view/3689.