References
- Electronics, Engineering Edition (March 1958), pp. 52–55.
- Baker, A. N., Goldey, J. M. & Ross, I. M., I.R.E. Wescon Convention Record, Part 3, 43 (1959).
- Mackintosh, I. M., “Three-terminal p-n-p-n transistor switches”, I.R.E. Trans, on Electron Devices, 5 (Jan. 1958).