@Article{npg-14-701-2007,
AUTHOR = {Anh, V. and Yu, Z.-G. and Wanliss, J. A.},
TITLE = {Analysis of global geomagnetic variability},
JOURNAL = {Nonlinear Processes  in Geophysics},
VOLUME = {14},
YEAR = {2007},
NUMBER = {6},
PAGES = {701--708},
URL = {http://www.nonlin-processes-geophys.net/14/701/2007/},
ISSN = {1023-5809}
}