1. Electronic theory and the magnetron oscillator;BENHAM;Proc. Phys. Soc. (London),1935
2. Electronic theory of the plane magnetron;BRILLOUIN;Advances in Electronics,1951
3. “Microwave Electronics,”;SLATER,1950
4. Rectilinear electron flow in beams;PIERCE;J. Appl. Phys.,1940
5. R. BERTEROTTIERE AND G. CONVERT Devices of focusing of electronic beams. U.S. Patent 2,807,739, September 29, 1957.