1510 THE BELL SYSTEM TECHNICAL JOURNAL, NOVEMBER 1953 



Gentile, S. P.^ and P. J. Barotta* 



Transistor Physics Simplified, Radio and Telev. News, 50, pp. 44-46, 

 100-102, July, 1953. 



HiNES, M. E.' 



Traveling-Wave Tube, Radio and Telev. News, 49, pp. 12-14, 26, 

 June, 1953. 



KoLB, E. D., see W. P. Slighter. 



Labrie, L. J., see D. F. Ciccolella. 



LiNVILL, J. G.^ 



Transistor Negative -Impedance Converters, I.R.E., Proc, 41, pp. 

 725-729, June, 1953. 



May, a. S.' 



Microwave System Test Equipment, Commun. Eng., 13, pp. 24-25, 

 44-45, May-June, 1953. 



McKay, K. G.' 



Bombardment Conductivity, Ind. Diamond Rev., 13, pp. 127-130, 

 June, 1953. 



McLean, D. A.,^ Birdsall, H. A.^ and C. J. Calbick^ 



Microstructure of Capacitor Paper, Ind. and Eng. Chem., 45, pp. 

 1509-1515, July, 1953 (Monograph 2142). 



McMillan, B.^ 



Basic Theorems of Information Theory, Ann. Math. Stat., 24, pp. 

 196-219, June, 1953 (Monograph 2124). 



This paper describes briefly the current mathematical models upon which 

 communication theory is based, and presents in some detail an exposition and 

 partial critique of C. E. Shannon's treatment of one such model. It then 

 presents a general limit theorem in the theory of discrete stochastic processes, 

 suggested by a result of Shannon's. 



1 Bell Telephone Laboratories, Inc. 

 * Hudson Technical Institute. 



