1. Brown, R. H. and A. C. B. Lovell: The Exploration of Space by Radio. London 1951.
2. Pawsey, J.L., and R.N. Bracewell: Radio Astronomy, Oxford 1954.
3. The Proceedings of the Institute of Radio Engineers, Vol. 46, No. 1, 1958, ed. by F. T. Haddock is devoted to papers on radio astronomy which are very largely concerned with techniques.
4. Valley, G. E., and H. Wallman: Vacuum Tube Amplifiers, New York 1948
5. Voorhis, S.N. Van: Microwave Receivers, New York 1948