Ibarburen Aizpurúa, Juan Bautista. “About the Conference ‘Metropolitan Cities and Regional Development in Italy. Debating the Cities’”. Documents d’Anàlisi Geogràfica 19 (January 15, 1992): 241–245. Accessed September 9, 2025. https://dag.revista.uab.cat/article/view/v19-20-ibarburen.