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nasa.gov
ntrs.nasa.gov
De Young et al. Preliminary Design and Cost of a 1-Megawatt Solar-Pumped Iodide Laser Space-to-Space Transmission Station, NASA Technical Memorandum, 1987 (Original version, WebCite archive), Retrieved 2011-06-23
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webcitation.org
De Young et al. Preliminary Design and Cost of a 1-Megawatt Solar-Pumped Iodide Laser Space-to-Space Transmission Station, NASA Technical Memorandum, 1987 (Original version, WebCite archive), Retrieved 2011-06-23