Space Electronics Issue, Proceedings of the I.R.E., April 1960.
William Meckling, “Economic Potential of Communication Satellites,” Science, June 16, 1961, page 1885.
Special Issue on Project Echo, Bell System Technical Journal, July 1961.
C. C. Cutler, “Radio Communication by Means of Satellites,” Planetary and Space Science Journal, July 1961, page 254.
W. C. Jakes, Jr., “Project Echo,” Bell Laboratories Record, September 1961, page 306.
John R. Pierce, “Communication Satellites,” Scientific American, October 1961, page 90.
United States Senate, Committee on Aeronautical and Space Sciences, Communication Satellites: Technical, Economic, and International Developments (staff report), U. S. Government Printing Office, Washington, 1962.
L. J. Carter, editor, Communications Satellites, Academic Press, New York and London, 1962.
“Situation Report on Communications Satellites,” Interavia, June 1962, page 749.
Leonard Jaffe, “Communications by Satellite,” International Science and Technology, August 1962, page 44.