442 THE BELL SYSTEM TECHNICAL JOURNAL, MAY 1952 



number of workers in physical research, chemical and metallurgical 

 research and transistor development. In reality, these colleagues are 

 the authors of this paper; and it is to them the writer owes full and 

 appreciative credit for the material that has made possible this report 

 of progress in transistor electronics. 



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1. R. M. Ryder, R. J. Kircher, "Some Circuit Aspects of the Transistor", Bell 



System Tech. J., 28, p. 367, 1949. 



2. R. L. Wallace, G. Raisbeck, "Duality as a Guide in Transistor Circuit Design", 



Bell System Tech. J., 30, p. 381, 1951. 



3. W. Shocklev, M. Sparks, G. K. Teal, "p-/i Transistors", Phys. Rev., 83, p. 151, 



1951. 



4. R. L. Wallace, W. J. Pietenpol, "Some Circuit Properties and Applications of 



n-p-n Transistors", Bell System Tech. J., 30, p. 530, 1951. 



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pp. 122-121, Apr. 1, 1951. 



6. J. N. Shine, "The Phototransistor", Bell Laboratories Record, 28, No. 8, pp. 



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