A. Ifantis Stergios Papadimitriou The Nonlinear Predictability of the Electrotelluric Field Variations Data Analyzed with Support Vector Machines as an Earthquake Precursor. 315-332 2003 13 Int. J. Neural Syst. 5 http://dx.doi.org/10.1142/S0129065703001674 db/journals/ijns/ijns13.html#IfantisP03