Liemohn, Michael W. and A. A. CHAN, "Unraveling the Causes of Radiation Belt EnhancementsArkiveret 27. maj 2010 hos Wayback Machine". EOS, TRANSACTIONS, AMERICAN GEOPHYSICAL UNION, Volume 88, Number 42, 16 October 2007, pages 427-440. Republished by NASA and accessed online, 8 February 2010. Adobe File, page 2.
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Liemohn, Michael W. and A. A. CHAN, "Unraveling the Causes of Radiation Belt EnhancementsArkiveret 27. maj 2010 hos Wayback Machine". EOS, TRANSACTIONS, AMERICAN GEOPHYSICAL UNION, Volume 88, Number 42, 16 October 2007, pages 427-440. Republished by NASA and accessed online, 8 February 2010. Adobe File, page 2.