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3. Suzuki and Yamao, A study of the configuration of a GMSK modulator, 1980 National Convention, 2106.
4. Ichikawa, Komaki and Okamoto, Microwave endless phase shifter composed of dual gate FET's, Tech. Rept. I.E.C.E., MW80-1 (1980).
5. J.J. Hill, A simple digital pulse-shaping circuit, Proc. I.E.E.E., 65, p. 1517 (Oct. 1977).