N. D. Mourtzas, K. Symeonidis, N. Passas, E. Alkalais, and E. Kolaiti, “SLOPE STABILIZATION ON CHALKOUTSI – DILESI ROAD, AT PIGADAKIA LOCATION, ATTICA PREFECTURE”, geosociety, vol. 43, no. 3, pp. 1286–1300, Jan. 2010.