Geodesic
Kolmogorov widths of Sobolev classes on an irregular domain
Trudy Matematicheskogo Instituta imeni V.A. Steklova, Orthogonal series, approximation theory, and related problems, Tome 280 (2013), pp. 41-52.

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     author = {O. V. Besov},
     title = {Kolmogorov widths of {Sobolev} classes on an irregular domain},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {41--52},
     publisher = {mathdoc},
     volume = {280},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_2013_280_a2/}
}
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O. V. Besov. Kolmogorov widths of Sobolev classes on an irregular domain. Trudy Matematicheskogo Instituta imeni V.A. Steklova, Orthogonal series, approximation theory, and related problems, Tome 280 (2013), pp. 41-52. http://geodesic.mathdoc.fr/item/TM_2013_280_a2/

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