@article{weko_23745_1,
   author	 = "宮下,幸長 and 上出,洋介 and 三好,由純 and 町田,忍 and 向井,利典 and 齋藤,義文",
   title	 = "Magnetotail variations associated with substorm expansion onsets for storm time and nonstorm time",
   journal	 = "Geophysical Research Letters",
   year 	 = "2006",
   volume	 = "33",
   number	 = "24",
   month	 = "dec"
}