REFERENCES
- Bales, W. et al., J. appl. phys., 26 (1955), 1163.
- Wagher, H. M., Proc. National Electronics Conference, 8 (1952), 553.
- Seymour John, Electrical Communication, 36 (2) (1960), 112.
- Levi, R., J. appl. phys., 26 (1955), 639.
- Beck, A. H. W., Proc. Inst. Elec. Engng, 28 (1959), 106.
- Jenkins, R. O., J. Electronics & Control, 10 (2) (Feb. 1961), 81.
- Roseberry Fred, Handbook of Electron Tubes and Vacuum Techniques.
- Albert, M. J. & Atta, M. A., Metals & Materials (Feb. 1967), 43.