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3. Lipson, H.S., Optical-transforms, (Acad. Press, London and N.Y. 1972)
4. Bracewell, R.: Fourier-transform and its applications, (McGraw Hill Book Co., N.Y. 1971)
5. Shulman, R.A.: Optical-data-processing, (John Wisley and Sons Inc., N.Y. 1970)