REFERENCES
- Srivastava, H. N. & Lamba, B. K., I. Met. Deptt. Scientific Report No. 40, 1967.
- Srivastava, H. N. & Lamba, B. K., I. Met. Deptt. Scientific Report No. 79, 1968.
- Millman, J. & Taub, H., “Pulse, digital and switching waveforms” (McGraw-Hill Book Co. Inc., N.Y.), Chapt. 11, p. 440.