Liemohn, Michael W. and A. A. CHAN, "Unraveling the Causes of Radiation Belt Enhancementsنسخة محفوظة 27 May 2010 على موقع واي باك مشين.". 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.
Liemohn, Michael W. and A. A. CHAN, "Unraveling the Causes of Radiation Belt Enhancementsنسخة محفوظة 27 May 2010 على موقع واي باك مشين.". 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.