@Article{nhess-7-535-2007,
AUTHOR = {Freund, F. T.},
TITLE = {Pre-earthquake signals – Part I: Deviatoric stresses turn rocks into a source of electric currents},
JOURNAL = {Natural Hazards and Earth System Science},
VOLUME = {7},
YEAR = {2007},
NUMBER = {5},
PAGES = {535--541},
URL = {http://www.nat-hazards-earth-syst-sci.net/7/535/2007/},
DOI = {10.5194/nhess-7-535-2007}
}