Angelis, Vasilis, Athanasios Angelis-Dimakis, and Katerina Dimaki. “Identifying Clusters of Regions in the European South, Based on Their Economic, Social and Environmental Characteristics”. REGION 3, no. 2 (November 18, 2016): 71–102. Accessed April 26, 2024. https://openjournals.wu.ac.at/ojs/index.php/region/article/view/81.