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Translated from Ukrainskii Matematicheskii Zhurnal, Vol. 25, No. 1, pp. 115–120, January–February, 1973.
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Martynyuk, V.T., Storchai, V.F. Approximation by polyhedral functions in a hausdorff metric. Ukr Math J 25, 98–102 (1973). https://doi.org/10.1007/BF01085401
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DOI: https://doi.org/10.1007/BF01085401