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Translated from Matematicheskie Zametki, Vol. 50, No. 6, pp. 85–93, December, 1991.
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Magaril-Il'yaev, G.G., Osipenko, K.Y. Optimal recovery of functionals based on inaccurate data. Mathematical Notes of the Academy of Sciences of the USSR 50, 1274–1279 (1991). https://doi.org/10.1007/BF01158269
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DOI: https://doi.org/10.1007/BF01158269