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Translated from Ukrainskii Matematicheskii Zhurnal, Vol. 23, No. 3, pp. 307–317, May–June, 1971.
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Luchka, A.Y. On the rate of convergence of some projection methods for linear operator equations. Ukr Math J 23, 259–267 (1971). https://doi.org/10.1007/BF01085349
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DOI: https://doi.org/10.1007/BF01085349