Cluster observations in the inner magnetosphere during the 18 April 2002 sawtooth event: Dipolarization and injection at <i>r</i> = 4.6 <i>R</i><sub><i>E</i></sub>S. Ohtani, A. T. Y. Lui, L. G. Blomberg et al.|Journal of Geophysical Research Atmospheres|2007Cited by 48