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@article{TRSPY_1987_180_a123, author = {A. I. Stepanets}, title = {Approximation of periodic functions by {Fourier} sums}, journal = {Informatics and Automation}, pages = {202--204}, publisher = {mathdoc}, volume = {180}, year = {1987}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/TRSPY_1987_180_a123/} }
A. I. Stepanets. Approximation of periodic functions by Fourier sums. Informatics and Automation, Theory of functions and related questions of analysis, Tome 180 (1987), pp. 202-204. http://geodesic.mathdoc.fr/item/TRSPY_1987_180_a123/