References
- John, G. Tatum, Microwaves, 6 (9) (1967) 26.
- Lae, H. C., Microwaves, 12 (2) (1969), 51.
- Vincent, B. T., Cooke (Jr), H. F. & Anderson, A. J., Microwave Journal, 9 (7) (1969), 63.
- Julius, Lange, Microwaves, 6 (12) (1967), 38.
- Application notes from TRW Semiconductors Inc., USA.