@Article{nhess-8-775-2008,
AUTHOR = {Ida, Y. and Yang, D. and Li, Q. and Sun, H. and Hayakawa, M.},
TITLE = {Detection of ULF electromagnetic emissions as a precursor to an earthquake in China with an improved polarization analysis},
JOURNAL = {Natural Hazards and Earth System Science},
VOLUME = {8},
YEAR = {2008},
NUMBER = {4},
PAGES = {775--777},
URL = {http://www.nat-hazards-earth-syst-sci.net/8/775/2008/},
DOI = {10.5194/nhess-8-775-2008}
}