Composition of relativistic cosmic rays detected on Gemini XI O'dell, F. W. ; Shapiro, M. M. ; Silberberg, R. ; Stiller, B. ; Tsao, C. H. ; Durgaprasad, N. ; Fichtel, C. E. ; Guss, D. E. ; Reames, D. V. Abstract Publication: International Cosmic Ray Conference Pub Date: 1970 Bibcode: 1970ICRC....1..457O