... On the Modification of the Upper Atmosphere by SPS..

J. Zinn, C.D. Sutherland, M.B. Pongratz (1978), ''Update on Predicted Ionospheric Effects for Launches of Heavy Lift Rocket Vehicles for Construction of SPS," LA-UR-1590, Los Alamos Scientific Laboratory. USSA (1976), "United States Standard Atmosphere, 1976," NOAA-NASA-USAF.

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