646 BELL SYSTEM TECHNICAL JOUliNAL 



5. "Vacuum-Tube Networks," F. B. Llewellyn and L. C. Peterson, Proc. I. R. E., Vol. 



32, no. 3, pp. 144-166, March 1944. 

 6 "Equivalent Circuits of Linear Active Four-Terminal Networks," L. C. Peterson, 



B. S. T. /., Vol. XXVII, No. 4, pp. 593-622, October 1948. 



7. "Impedance Properties of Electron Streams," L. C. Peterson, B. S. T. J., Vol. 18, 



pp. 465-481, July 1939. 



8. "Klystron and Microwave Triodes," Hamilton, Knijjp and Kuper, pp. 97-169, 



Radiation Laboratory Series, Vol. 7, McGraw-Hill, 1948. 



9. "High-Freciuency Total Emission Loading in Diodes," Nicholas A. Begovich, Journal 



Applied Physics, Vol. 20, No. 5, pp. 457-461, May 1949. 

 10 "On the Velocity-Dependent Characteristics of High-Frequency Tubes," Julian K. 

 Knijip, Journal Applied Physics, Vol. 20, No. 5, pp. 425-431, May 1949. 



11. I. Langmuir, Phys. Rev., 21, pp. 419-435, 1923. 



12. "Extension and Application of Langmuirs' Calculations on a Phase Diode with Max- 



wellian Velocity Distribution of the Electrons," A. Van Der Ziel, Philips Research 

 Reports, Vol. 1, No. 2, pp. 97-118, January 1946. 



13. "Extension of Langmuir's (?, 77) Tables for a Plane Diode with a Maxwellian Dis- 



tribution of the Electrons," P. H. J. A. Klegmen, Philips Research Reports, Vol. 1, 

 No. 2, January 1946, pp. 81-96. 



14. "Some Characteristics of Diodes with Oxide-Coated Cathodes," W. R. Ferris, R.C. A. 



Review, Vol. X, No. 1, pp. 134-149, March 1949. 



15 "A Microwave Triode for Radio Relay," J. A. Morton, Bell Laboratories Record, 



Vol. XXVn, No. 5, May 1949. 



16 "Transadmittance and Input Conductance of a Lighthouse Triode at 3000 Mega- 



cycles," Norman T. Lavoo, Proc. I. R. E., Vol. 35, No. 11, pp. 1248-1251, Novem- 

 ber 1947. 



17 "Total Emission Damping in Diodes," A. Van Der Ziel, Nature, Vol. 159, No. 4046, 



May 17, 1947, pp. 675-676, (52 mc). 



18. "Total Emission Damping," J. Thomson, Nature, Vol. 161, No. 4100, pp. 847, May 



29, 1948. 



19. "Total Emission Damping with Space-Charge Limited Cathodes," C. N. Smyth, 



Nature, 157, 841, June 22, 1946. 



20. "A Method of Measuring Phase at Microwave Frequencies," S. D. Robertson, B. S. 



T. J., Vol. XXVIII, No. 1, pp. 99-103, January 1949. 



21. "Passive Four-Pole Admittance of Microwave Triodes," S. D. Robertson, this is- 



sue of the B. S. T. J. 

 22 "Total Emission Noise in Diodes," A. Van Der Ziel and A. Versnel, Nature, Vol. 



159, No. 4045, pp. 640-641, May 10, 1947. 

 23. "Ultra-High-Frequency Oscillations by Means of Diodes," F. B. Llewellyn and .\. E. 



Bowen, B. S. T. J., Vol. 18, pp. 280-291, April 1939. 



