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- [23] AIR DENSITY DETERMINATION ON HEIGHTS OF 40-70 KM BY MICROWAVE-RADIATION OF ATMOSPHERIC OXYGEN IZVESTIYA AKADEMII NAUK SSSR FIZIKA ATMOSFERY I OKEANA, 1969, 5 (10): : 995 - &
- [24] FADING OF RADIO WAVES WEAKLY SCATTERED AT VERTICAL INCIDENCE FROM HEIGHTS NEAR 90 KM JOURNAL OF ATMOSPHERIC AND TERRESTRIAL PHYSICS, 1961, 21 (2-3): : 142 - +