134 BELL SYSTEM TECHNICAL JOURNAL 



9. K. Kohl, "Continuous Ultra-Short Electric Waves," Ergebnisse der exaklen 

 Naturwissenschaften, v. 9, 1930, p. 275. (Bibliography of 135 titles.) 



10. G. Potapenko, "Investigations in the Field of I'ltra-Short Electro-Magnetic 



Waves," Phys. Rev., v. 39, 1932, p. 625; v. 39, 1932, p. 638; v. 40, 1932, 

 p. 988; V..41, 1932, p. 216. (Many references to the literature.) 



11. H. Collenbusch, "Investigations of Very Short Wave Tubes," Ann. der Physik, 



Series 5, v. 13, 1932, p. 191. 



12. H. N. Kozanowski, "A New Circuit for the Production of Ultra-Short-Wave 



Oscillations," /. R. E. Proc, v. 20, 1932, p. 957. 



13. E. C. S. Megaw, "Electronic Oscillations," /. E. E. JL, v. 72, 1933, p. 313. 



(Bibliography of 47 titles.) 



14. H. G. Clavier, "Production and Utilization of Micro-Ravs," Elec. Communica- 



tion, V. 12, 1933, p. 3 



Magnetro7i Tubes 



15. A. W. Hull, "The Effect of a Uniform Magnetic Field on the Motion of Electrons 



Between Coaxial Cylinders," Phys. Rev., v. 18, 1921, p. 31. 



16. E. Habann, "A New X'acuuni Tube Generator," Zeit.f. Hockfreq., v. 24, 1924, 



p. 115. 



17. A. Zacek, "A Method for the Production of Verv Short Electromagnetic Waves," 



Zeit.f. Hockfreq., v. 32, 1928, p. 172. 



18. K. Okabe, "Production of Intense Extra-Short Electromagnetic Waves bv 



Split-Anode Magnetron," /. E. E. JL, Japan, 1928, p. 284. See also 

 I. R. E. Proc, V. 17, 1929. p. 652; and L R. E. Proc, v. 18, 1930, p. 1748. 



19. G. R. Kilgore, " Magnetostatic Oscillators for Generation of Ultra-Short Waves," 



/. R. E. Proc, V. 20, 1932, p. 1741. 



20. E. C. S. Megaw, "An Investigation of the Magnetron Short Wave Oscillator," 



/. E. E. JL, V. 72, 1933, p. 326. (13 references.) 



21. C. E. Cleeton and N. H. \Villiams, "A Magnetostatic Oscillator for the Genera- 



tion of 1 to 3-Cm. Waves," Phys. Rev., v. 44, 1933, p. 421. 



22. I. Wolff, E. G. Linder, and R. A. Braden, "Transmission and Reception of 



Centimeter Waves," /. R. E. Proc, v. 22, 1934, p. 555. 



General 



23. F. B. Llewellyn, "Vacuum Tube Electronics at Ultra-High Frequencies, 



/. R. E. Proc, V. 21, 1933, p. 1531. 



24. W. E. Benham, "Theory of the Internal Action of Thermionic Systems at 



Moderately' High Frequencies," Part I — PhiL Mag., March 1928, p. 641. 

 Part U—PhiL Mag. A, v. 11, 1931, p. 457. 



25. L. Rohde, "On Transmitter Tubes for Producing Waves One Meter Long," 



Hockfreq. und Elektroakustik, v. 40, 1932, p. 3. 



26. W. C. White, "The Selection of Types of Vacuum Tubes as Sources of High 



Frequency Power," G. E. Rev., v. 36, 1933, p. 394. 



27. W'. H. Wenstrom, "Historical Review of Ultra-Short-Wave Progress," /. R. K. 



Proc, v. 20, 1932, p. 95. (Bibliography of 54 titles.) 



