Composition of Cosmic Rays in the January 24 and September 2, 1971 Solar Events Fichtel, C. E. ; Bertsch, D. L. ; Biswas, S. ; Pellerin, C. J. ; Reames, D. V. Abstract Publication: Bulletin of the American Astronomical Society Pub Date: March 1973 Bibcode: 1973BAAS....5R.272F