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This paper is a condensation of a dissertation at the University of Kentucky, written under direction of Professor A.W. Goodman, to whom the author expresses sincerest appreciation. This research was supported by the National Science Foundation.
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Watson, M. On functions that are bivalent in the unit circle. J. Anal. Math. 17, 383–409 (1966). https://doi.org/10.1007/BF02788666
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DOI: https://doi.org/10.1007/BF02788666