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2. Parker, E.A., Langley, R.J, Langsford, P.A., and Drinkwater, A.J.: A reflector antenna with a dichroic Cassegrain mirror, 1978), p. 70–74IEE Conf. Publ. 169
3. Leonard, T.W., and Cofer, J.W.: A new equivalent circuit representation for the Jerusalem cross, 1978), p. 65–69IEE Conf. Publ. 169