Liu, W. W., B. L. Xu, J. C. Samson, and G. Rostoker (1995), Theory and observation of auroral substorms: A magnetohydrodynamic approach, J. Geophys. Res., 100, 79.
Liu, W. W. (1997), Physics of the explosive growth phase, Ballooning instability revisited, J. Geophys. Res., 102, 4927.
Liu, W. W., G. Rostoker, and D. N. Baker (1999), Magnetic pumping acceleration of relativistic electrons by large-amplitude ULF pulsations, J. Geophys. Res., 104, 17391.
Liu, W. W., P. Charbonneau, K. Thibault, and L. Morales (2006), Energy avalanches in the central plasma sheet, Geophys Res. Lett., 33, L19106, doi:10.1029/2006GL027282.
Liang, J., E. F. Donovan, W. W. Liu, B. Jackel, M. Syrjasuo, S. B. Mende, H. U. Frey, V. Angelopoulos, and M. Connors (2008), Intensification of preexisting auroral arc at substorm expansion phase onset: Wave-like disruption during thefirst tens of seconds, Geophys. Res. Lett., 35, L17S19, doi:10.1029/2008GL033666.