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The research was financially supported by the Russian Foundation for Basic Research (Grant 96-01-00332).
Dolgoprudnyî (Moscow obl.). Translated fromSibirskiĭ Matematicheskiĭ Zhurnal, Vol. 40, No. 6, pp. 1244–1252, November–December, 1999.
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Golubov, B.I. On the binary analogs of the hardy and hardy-littlewood operators. Sib Math J 40, 1051–1058 (1999). https://doi.org/10.1007/BF02677528
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DOI: https://doi.org/10.1007/BF02677528