[1]
Πλιάκας Φ., Διαμαντής I., Καλλιώρας A., and Πεταλάς Χ., “STUDY OF THE PROGRESS OF SEAWATER INTRUSION WITHIN A PLAIN AREA OF RHODOPE PREFECTURE”, geosociety, vol. 36, no. 4, pp. 2057–2066, Jan. 2004.