Literature Cited
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Dedicated to S. L. Sobolev on the occasion of his 80th birthday.
Moscow. Translated from Sibirskii Matematicheskii Zhurnal, Vol. 29, No. 5, pp. 181–190, September–October, 1988.
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Nikol'skii, S.M., Lizorkin, P.I. Classes of functions constructed on the basis of averaging. Sib Math J 29, 831–840 (1988). https://doi.org/10.1007/BF00970280
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DOI: https://doi.org/10.1007/BF00970280