@Article{nhess-3-171-2003,
AUTHOR = {Duma, G. and Ruzhin, Y.},
TITLE = {Diurnal changes of earthquake activity and geomagnetic Sq-variations},
JOURNAL = {Natural Hazards and Earth System Science},
VOLUME = {3},
YEAR = {2003},
NUMBER = {3/4},
PAGES = {171--177},
URL = {http://www.nat-hazards-earth-syst-sci.net/3/171/2003/},
DOI = {10.5194/nhess-3-171-2003}
}