Tomer, Robert B. (July 1960). "Chapter 3: Subjective Failures: Microphonics". Getting the most out of Vacuum Tubes(PDF). Photofact Publication (first printing, first ed.). Indianapolis, USA: Howard W. Sams & Co., Inc. pp. 48–50. LCCN60-13843. VTT-1. Archived(PDF) from the original on 2019-07-15. Retrieved 2020-01-31. [۱]
La Plante, Roger A. (July 1956). "Nonmicrophonic Klystron". Electronics. Vol. 29. Philips Laboratories, Irvington-on-Hudson, NY, USA: McGraw-Hill Publishing Company. pp. 238, 241. Retrieved 2013-04-17.
loc.gov
lccn.loc.gov
Tomer, Robert B. (July 1960). "Chapter 3: Subjective Failures: Microphonics". Getting the most out of Vacuum Tubes(PDF). Photofact Publication (first printing, first ed.). Indianapolis, USA: Howard W. Sams & Co., Inc. pp. 48–50. LCCN60-13843. VTT-1. Archived(PDF) from the original on 2019-07-15. Retrieved 2020-01-31. [۱]
tubebooks.org
Tomer, Robert B. (July 1960). "Chapter 3: Subjective Failures: Microphonics". Getting the most out of Vacuum Tubes(PDF). Photofact Publication (first printing, first ed.). Indianapolis, USA: Howard W. Sams & Co., Inc. pp. 48–50. LCCN60-13843. VTT-1. Archived(PDF) from the original on 2019-07-15. Retrieved 2020-01-31. [۱]
web.archive.org
Tomer, Robert B. (July 1960). "Chapter 3: Subjective Failures: Microphonics". Getting the most out of Vacuum Tubes(PDF). Photofact Publication (first printing, first ed.). Indianapolis, USA: Howard W. Sams & Co., Inc. pp. 48–50. LCCN60-13843. VTT-1. Archived(PDF) from the original on 2019-07-15. Retrieved 2020-01-31. [۱]