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Translated from Matematicheskie Zametki, Vol. 25, No. 4, pp. 551–555, April, 1979.
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Oskolkov, K.I. Lebesgue inequality in the mean. Mathematical Notes of the Academy of Sciences of the USSR 25, 286–288 (1979). https://doi.org/10.1007/BF01688480
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DOI: https://doi.org/10.1007/BF01688480