1. Radar reflections from the sun at very high frequencies;Abel;J. Geophys. Res,1961
2. Radar reflections from the sun at VHF;Abel,1963
3. On the question of reflecting radar signals from the sun;Bass;Ukr. J. Phys.,1957
4. Microwave radar observations of the sun;Benz;Astron. Astrophys.,1979