References
- Dyson, J. D., IRE Trans., AP-7 (April 1959); IRE Trans., AP-7 (Oct. 1959), 329.
- Duhamel, R. H. & Isbell, D. E., IRE National Convention Record, Pt. 1 (1957), 119.
- Duhamel, R. H. & Ore, F. R., IRE National Convention Record, Pt. 1 (1958), 139.
- Kosta, S. P., Int. J. Electronics (U.K.), 23 (5) (1967), 473.