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@article{TRSPY_1987_180_a86, author = {A. K. Kushpel'}, title = {Sharp estimates of the widths of convolution classes in the space $C_{2\pi}$}, journal = {Informatics and Automation}, pages = {148--149}, publisher = {mathdoc}, volume = {180}, year = {1987}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/TRSPY_1987_180_a86/} }
A. K. Kushpel'. Sharp estimates of the widths of convolution classes in the space $C_{2\pi}$. Informatics and Automation, Theory of functions and related questions of analysis, Tome 180 (1987), pp. 148-149. http://geodesic.mathdoc.fr/item/TRSPY_1987_180_a86/