REFERENCES (APPENDIX A) 1. Bowhill, S.A. , E. K. Walton and D. R. Ward, "Geostationary and Orbital Satellite Measurements of Artificial Spread-F Produced by Ionospheric Heating”, presented at 1974 URSI Meeting, October 14-17, Boulder, Colorado. 2. Briggs, B. H. , and I. A. Parkin, "On the Variation of Radio Star and Satellite Scintillations with Zenith Angle”, J. Atmos. Terr. Phys. , 25, 339, 1963. 3. Bowhill, S.A. , "Statistics of a Radio Wave Diffracted by a Random Ionosphere”, Jour. Res. NBS - D. Radio Propagation, 65D, 275, 1961. 4. Evans, J. V. , "Millstone Hill Radar Propagation Study: Scientific Results - Part II”, ESD-TR-73-260, Lincoln Laboratory, MIT, Lexington, Massachusetts, November 1973.
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