Multiparameter monitoring of short-term earthquake precursors and its physical basis. Implementation in the Kamchatka regionSergey Pulinets, Dimitar Ouzounov, Dmitry Davydenko and Alexei PetrukhinE3S Web Conf., 11 (2016) 00019DOI: https://doi.org/10.1051/e3sconf/20161100019