ΜΗΤΡΟΠΟΥΛΟΣ Π., NOTSU Κ., G. IGARASHl, MORI Τ., ΔΕΛΗΜΠΑΣΗΣ Ν., and ΚΑΚΚΑΒΑΣ Ν., “Radon concentration changes in ground water prior all the earthquakes (M>2.5) occurred from September 1998 to January 1999, in the area of Atalanti fault (Greece)”, geosociety, vol. 34, no. 4, pp. 1433–1439, Jan. 2001.