Vargemezis, G., Tsourlos, P., Papazachos, C. and Kostopoulos, D. 2007. Application of Electrical Resistivity Tomography to the detection of the Ermakia (Northern Greece) cavity system. Bulletin of the Geological Society of Greece. 40, 4 (Jan. 2007), 2060–2069. DOI:https://doi.org/10.12681/bgsg.17298.