References
- Heck, R. & Meyers, M., Siemens Review, 11 (1963), 401.
- Slabiak, W. & Lawson, L. T., Proc. of NEC, 21 (1965), 938.
- Bowler, P., IEE Publication, 17 (1965), 137.
- Hamilton, R. A. & Lezan, G. R., IEEE Industrial Static Power Conversion Conference Record, 1965, 69.
- Lancer, J., Brown Boveri Review, 57 (1970), 112.
- Revankar, G. N. & Nallathambi, K., J. Instn Telecom. Engrs, 2 (1972), 79.