Relativistic Solar Particles on 1989 October 22: Injection along Both Legs of a Closed Interplanetary Magnetic Field Loop
Proceedings article published in 2004 by
D. Ruffolo 
,
P. Tooprakai,
M. Rujiwarodom,
T. Khumlumlert,
J. W. Bieber,
P. Evenson,
R. Pyle
,
P. Tooprakai,
M. Rujiwarodom,
T. Khumlumlert,
J. W. Bieber,
P. Evenson,
R. Pyle
