"Production of cosmic radiation at the sun", The Physical Review, 1954 August

"Production of cosmic radiation at the sun", The Physical Review, 1954 August, - 06 JWF 3 Sub- 1 Box 9 Folder 45, Box: 9, Folder: 45. John W. Firor Papers, - 06-JWF. National Center for Atmospheric Research (NCAR) Archives. https://aspace.archives.ucar.edu/repositories/2/archival_objects/9114 Accessed May 01, 2026.