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@article{TM_1987_180_a127, author = {Yu. N. Subbotin}, title = {The error in multidimensional piecewise polynomial approximation}, journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova}, pages = {208--209}, publisher = {mathdoc}, volume = {180}, year = {1987}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/TM_1987_180_a127/} }
Yu. N. Subbotin. The error in multidimensional piecewise polynomial approximation. Trudy Matematicheskogo Instituta imeni V.A. Steklova, Theory of functions and related questions of analysis, Tome 180 (1987), pp. 208-209. http://geodesic.mathdoc.fr/item/TM_1987_180_a127/