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2. Some early results from the ATS-6 radio beacon experiment;Davies;Radio Sci.,1975
3. Measurements of the columnar electron contents of the ionosphere and plasmasphere;Davies;J. Geophys. Res.,1976
4. Donnelly , R. F. D. N. Anderson K. Davies P. V. S. Rama Rao Interpretation of the shape factor at Ootacamund, India Proceedings of the COSPAR Symposium on Beacon Satellite Measurements of Plasmaspheric and Ionospheric Properties, May 1978 P. F. Checcacci 17.1 17.15 Florence, Italy 1978
5. Fritz , R. B. ATS-6 radio beacon electron content measurements at Boulder, July 1974-May 1975 Boulder, Colo. 1976