REFERENCES
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- Advances in bioengineering and instrumentations. Edited by Fred Alt. Instrument Society of America Publication. 1966.
- Hp Components: Opto-electronics Designers Catalogue. 1975.
- Electronic Devices and Circuits by Millman and Halkias. McGraw-Hill Inc.
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- IEEE, INTERCON 74CH0904-3, March, 1974.
- Electronics, Nov 8, 1971: McGraw-Hill Inc.