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Translated from Matematicheskie Zametki, Vol. 53, No. 3, pp. 131–143, March, 1993.
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Sharapudinov, I.I. Convergence of the method of least squares. Math Notes 53, 335–344 (1993). https://doi.org/10.1007/BF01207722
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DOI: https://doi.org/10.1007/BF01207722