Koukakis, P., P. Tsakiridis, A. Ntziouni, K. Kordatos, and M. Perraki. 2016. “ATTAPULGITE CLAY OF THE VENTZIA BASIN, WESTERN MACEDONIA, GREECE, AS TEMPLATE IN SYNTHESIZING AMORPHOUS CARBON NANOTUBES”. Bulletin of the Geological Society of Greece 50 (4):1895-1902. https://doi.org/10.12681/bgsg.14120.