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Lizorkin, P. I.; Nikol’skij, S. M. A theorem concerning approximation on the sphere. (English) Zbl 0565.41033 Anal. Math. 9, No. 3, 207-221 (1983). Reviewer: S.M.Mazhar MSC: 41A65 41A25 41A63 × Cite Format Result Cite Review PDF Full Text: DOI