REFERENCES
- Essen (L) Atomic Clocks. Research. 15, 1962; 225.
- Mungall (A G). Atomic Time Scales. International Journal of Scientific Meoteorology. 7, 1971; 146.
- Mathur (B S). A Second, The S. I. (International System of Units) Unit of Time Interval and its Generation. Report of the Time and Frequency Division, National Physical Laboratory, New Delhi. 1975. P 54.
- Sen (A K) and Saha (B). Worldwide Standards of Time and Frequency. J. Sci. & Industr. Res. 32, 1973; 300.
- Hewlett Packard. Electronics for Measurement, Analysis, Computation. HP Catalogue. 1975.
- Watt (AD) and Plush (RW). Power Requirements and Choice of an Optimum Frequency for a Worldwide Frequency Standard Broadcasting Station. J. Res. NBS. 63D, 1959; 35.
- Evans (J V). Radio Wave Propagation Through the Earth's Neutral Atmosphere and Ionosphere (ch. 2), Propagation in the Ionosphere (Pt. 2) in Radar Astronomy, edited by EVANS (JV) and HAGFORS (T). McGraw-Hill Book Co., NY. 1968. P 99.
- Bhar (JN), Das Gupta (A) and Basu (S). Studies on Ionospheric Electron Content and Irregularities of Electron Concentration at Low Latitudes. Final Scientific Report, AFC RL F 61062-68-C-0008 Institute of Radio Physics and Electronics, University of Calcutta. Sept. 30, 1970.
- Arendt (P R). Natural Tolerance Limits of Doppler Measurements of Outer-Space Radio Signals. USAS RDL Technical Rep. 2253, 1962.
- Evans (JV) and Ingalls (RP). Radio Echo Studies of the Moon at 7.84 Metre Wavelength. MIT Lincolon Lab. Tech. Rep. 288, DDC 294008. 1962.
- Porcello (L J) and Hughes (LR). High-Frequency Phase Fluctuations in Trans-ionospheric Propagation. Paper Presented to the Spring URSI meeting; Washington. 1964.
- Sen (A K), Saha (B), Trehan (S K) and Chatterjee (SK). Prompt Effects of Solar Flares Observed Simultaneously on the Radio Wave Propagation Characteristics in the LF, VLF and HF bands. Ind. J. Radio & Space Phys. 3, 1974; 140.
- Davies (K). Ionospheric Radio Propagation. 1966. Dover Publications NY.
- Donnelly (R F) and Fritz (R B). ATS Observations of Sudden Increase of Total Electron Content induced by EUV and X-ray Burst of Solar Flares. NOAATRERL 347—SEL 35, Boulder, Colorado. Sept, 1975.
- Krishna Murthy (BV), Krishna Murthy (K), Reddy (C R), Reddy (C A) and Vaidyanathan (S). Scintillations of VHF and UHF Transmissions from ATS-6 Satellites Observed at the Magnetic Equator, Presented at the Symp. on Solar Planetary Physics; held at PRL, Ahmedabad on Jan 20–24, 1976.
- Mathur (N C), Grossi (M D) and Pearlman (M R). Atmospheric Effects in Very Long Baseline Interferometry. Radio Science. 5, 1970; 1253.
- Mathur (N C). Very Long Baseline Interferometry in Radio Astronomy, Proc. Symp. on Spectroscopic Studies of Astrophysical Interest, Hyderabad. August 1972.