Borrero, Juan D., and Estrella Gualda. “Crawling Big Data in a New Frontier for Socioeconomic Research: Testing With Social Tagging”. Journal of Tourism, Sustainability and Well-being 1, no. 1 (October 30, 2013): 1–22. Accessed October 27, 2025. https://journals.cinturs.pt/jtsw/article/view/1.