Yudin, V. A. Ein mehrdimensionaler Jacksonscher Satz. (Russian) Zbl 0348.42001 Mat. Zametki 20, 439-444 (1976). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 1 Document MSC: 42A10 Trigonometric approximation 41A63 Multidimensional problems PDFBibTeX XMLCite \textit{V. A. Yudin}, Mat. Zametki 20, 439--444 (1976; Zbl 0348.42001)