Literature cited
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Translated from Matematicheskie Zametki, Vol. 28, No. 1, pp. 25–32, July, 1980.
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Dubinin, V.N. Coverings of vertical segments under a conformal mapping. Mathematical Notes of the Academy of Sciences of the USSR 28, 476–480 (1980). https://doi.org/10.1007/BF01159422
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DOI: https://doi.org/10.1007/BF01159422