Levine, Mark; Paschalidis, Nicholas; Sarris, Emmanuel (May 1994). "Energetic ion distributions on both sides of the Earth's magnetopause". Journal of Geophysical Research: Space Physics. 99 (A5): 8687–8703. Bibcode:1994JGR....99.8687P. doi:10.1029/93JA03563.
Levine, Mark; Paschalidis, Nicholas; Sarris, Emmanuel (May 1994). "Energetic ion distributions on both sides of the Earth's magnetopause". Journal of Geophysical Research: Space Physics. 99 (A5): 8687–8703. Bibcode:1994JGR....99.8687P. doi:10.1029/93JA03563.