Zouros, N. “GLOBAL GEOPARKS NETWORK AND THE NEW UNESCO GLOBAL GEOPARKS PROGRAMME”. Bulletin of the Geological Society of Greece 50, no. 1 (July 27, 2016): 284–292. Accessed April 1, 2025. https://ejournals.epublishing.ekt.gr/index.php/geosociety/article/view/11729.