8Kinoshita M,Uyeshima M,Uyeda S.1989.Earthquake prediction research by means of telluric potential monitoring.Progress Rep.1: Installation of monitoring network[J].Bull Earthq Res Inst,64: 255-311
9Varotsos P,Alexopoulous K,Nomicos K.1981.Seismic electric currents[J].Prakt Akad Athenon,56: 277-286
10Varotsos P,Alexopoulous K.1984a.Physical properties of the variations of the electric field of the earth preceding earthquakes,I[J].Tectophysics,110: 73-98
