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[3] Lewis, L. J., et al. Linear Systems Analysis, McGraw-Hill Inc., New York, 1969, p. 193.
[4] Schwartz, M. Information, Transmission, Modulation, and Noise, McGraw-Hill Inc., New York, 1970, p. 35.
[5] Considine, V. "Digital Complex Sampling," Electronics Letters, 19, August 4, 1983.
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