626 THE BELL SYSTEM TECHNICAL JOURNAL, MAY 1953 



REFERENCES 



1. Iiiglis, A. H., and W. L. Tuffriell, An Improved Telephone Set. Bell System 



Tech. J. 30, pp. 239-270, April, 1951. 



2. Gibbon, C. O., The Common Battery Anti-Sidetone Subscriber Set. Bell Sys- 



tem Tech. J. 17, pp. 245-257, April, 1938. 



3. Mott, E. E., and R. C. Miner, The Ring Armature Telephone Receiver. Bell 



System Tech. J. 30, pp. 110-140, Jan., 1951. 



4. Inglis, A. H., Transmission Features of the New Telephone Sets. Bell System 



Tech. J. V. 17, pp. 358-380, July, 1938. 



