Number | Name | Date | Kind |
---|---|---|---|
4810938 | Johnson et al. | Mar 1989 | |
4812702 | Anderson | Mar 1989 | |
4959584 | Anderson | Sep 1990 | |
4972120 | Witting | Nov 1990 | |
5057750 | Farrall et al. | Oct 1991 | |
5095249 | Roberts et al. | Mar 1992 |
Entry |
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Kohl, Walter H.; "Materials and Techniques for Electron Tubes"; Second Printing, 1962. |
M. N. Hirsh and H. J. Oskam. "Glow Discharges at DC and Low Frequencies." Gaseous Electronics, vol. I. Academic Press, New York 1978, pp. 19-20. |