@article{weko_21544_1,
   author	 = "Keika,Kunihiro and Brandt,P.C. and 大谷,晋一 and Mitchell,D.G. and Min,K. and 能勢,正仁 and 小原,隆博 and 越石,英樹 and 松本,晴久",
   title	 = "Mass-dependent evolution of energetic neutral atoms energy spectra during storm time substorms: Implication for O+ nonadiabatic acceleration",
   journal	 = "Journal of Geophysical Research",
   year 	 = "2010",
   volume	 = "115",
   number	 = ""
}