Voir la notice de l'article provenant de la source Math-Net.Ru
@article{TRSPY_1987_180_a113, author = {V. I. Rukasov}, title = {Approximation of continuous periodic functions by linear means of their {Fourier} series}, journal = {Informatics and Automation}, pages = {187--188}, publisher = {mathdoc}, volume = {180}, year = {1987}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/TRSPY_1987_180_a113/} }
V. I. Rukasov. Approximation of continuous periodic functions by linear means of their Fourier series. Informatics and Automation, Theory of functions and related questions of analysis, Tome 180 (1987), pp. 187-188. http://geodesic.mathdoc.fr/item/TRSPY_1987_180_a113/