Arikas, Kostas. “Mineralogical and Geochemical Study of the Kirki Mining Wastes, Evros Region, Greece -Determination of the Environmental Impact by Toxic and Heavy Metals”. Bulletin of the Geological Society of Greece 40, no. 3 (January 1, 2007): 1343–1353. Accessed July 17, 2024. https://ejournals.epublishing.ekt.gr/index.php/geosociety/article/view/16886.