16 BELL SYSTEM TECHNICAL JOURNAL 



References 



1. "Measuring Methods for Maintaining the Transmission Efficiency of Telephone 



• Circuits," F. H. Best, Elec. Engg., vol. 43, February 1924, pp. 136-144. 



2. "Electrical Tests and Their Applications in the Maintenance of Telephone 



Transmission," W. H. Harden, Bell System Technical Journal, vol. 3, July 

 1924, pp. 353-392. 



3. "Practices in Telephone Transmission Maintenance Work," W. H. Harden, 



Elec. Engg., vol. 43, December 1924, pp. 1124-1128. 



4. "A Recording Transmission Measuring System for Telephone Circuit Testing," 



F. H. Best, Bell System Technical Journal, vol. 12, January 1933, pp. 22-34. 



5. "Stabilized Feedback Amplifiers," H. S. Black, Bell System Technical Journal, 



vol. 13, January 1934, pp. 1-18. 



6. "Projecting Circuit Performance on a Screen," F. E. Fairchild, Bell Laboratories 



Record, vol. 13, July 1935, pp. 328-331. 



7. "Improved Transmission Measuring System," F. H. Best, Bell Laboratories 



Record, vol. 14, March 1936, pp. 237-239. 



8. "Decibel Meters," F. H. Best, Bell Laboratories Record, vol. 15, January 1937, 



pp. 167-169. 



9. "A New Noise Meter," J. M. Barstow, Bell Laboratories Record, vol. 15, April 



1937, pp. 252-256. 



