Best approximation of sums of elements and a theorem of Newman and Shapiro
English version (Springer): Ukrainian Mathematical Journal 41 (1989), no. 12, pp 1395-1401.
Citation Example: Ganzburg M. I. Best approximation of sums of elements and a theorem of Newman and Shapiro // Ukr. Mat. Zh. - 1989. - 41, № 12. - pp. 1624–1630.
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