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N. K. Bari, Trigonometric Series [in Russian], Fizmatgiz, Moscow (1961).
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Additional information
Mathematical Institute, National Ukrainian Academy of Science. Translated from Funktsional'nyi Analiz i Ego Prilozheniya, Vol. 29, No. 3, pp. 87–90, July–September, 1995.
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Radzievskii, G.V. Boundary value problems and related moduli of continuity. Funct Anal Its Appl 29, 217–219 (1995). https://doi.org/10.1007/BF01077063
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DOI: https://doi.org/10.1007/BF01077063