SAPS

Lyons, L., Nishimura, Y., Gallardo-Lacourt, B., Nicolls, M., Chen, S., Hampton, D., et al. (2015). Azimuthal flow bursts in the Inner Plasma Sheet and Possible Connection with SAPS and Plasma Sheet Earthward Flow Bursts. Journal Of Geophysical Research: Space Physics. http://doi.org/10.1002/2015JA021023 (Original work published May 2015)
Califf, S., Li, X., Wolf, R., Zhao, H., Jaynes, A., Wilder, F., et al. (2016). Large-amplitude electric fields in the inner magnetosphere: Van Allen Probes observations of subauroral polarization streams. Journal Of Geophysical Research: Space Physics. http://doi.org/10.1002/2015JA022252 (Original work published May 2016)
Lejosne, ène, & Mozer, F. (2017). Sub-Auroral Polarization Stream (SAPS) duration as determined from Van Allen Probe successive electric drift measurements. Geophysical Research Letters. http://doi.org/10.1002/2017GL074985 (Original work published August 2017)
Lejosne, ène, Kunduri, B., Mozer, F., & Turner, D. (2018). Energetic electron injections deep into the inner magnetosphere: a result of the subauroral polarization stream (SAPS) potential drop. Geophysical Research Letters. http://doi.org/10.1029/2018GL077969 (Original work published April 2018)