Thiranee khumlumlert และ David Ruffolo. (1996) Modeling pulses of solar cosmic rays. Chulalongkorn University:ม.ป.ท.Thiranee khumlumlert และ David Ruffolo. 1996. Modeling pulses of solar cosmic rays. ม.ป.ท.:Chulalongkorn University;Thiranee khumlumlert และ David Ruffolo. Modeling pulses of solar cosmic rays. ม.ป.ท.:Chulalongkorn University, 1996. Print.