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Translated from Matematicheskie Zametki, Vol. 53, No. 5, pp. 87–97, May, 1993.
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Osipenko, K.Y., Stesin, M.I. Optimal recovery of derivatives of bounded analytic and harmonic functions from inaccurate data. Math Notes 53, 513–520 (1993). https://doi.org/10.1007/BF01208547
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DOI: https://doi.org/10.1007/BF01208547