TC-1 observations of flux pileup and dipolarization-associated expansion in the near-Earth magnetotail during substorms - Zhang,H; Pu,ZY; Cao,X; Fu,SY; Liu,ZX; Ma,ZW; Dunlop,MW; Baumjohann,W; Xiao,CJ; Hong,MH; Cao,JB; Zong,QG; et al. (GEOPHYSICAL RESEARCH LETTERS, 2007)