Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1974_10_12_a12, author = {L. D. Kudryavtsev}, title = {Functions whose limit values are trigonometric polynomials}, journal = {Differencialʹnye uravneni\^a}, pages = {2223--2241}, publisher = {mathdoc}, volume = {10}, number = {12}, year = {1974}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1974_10_12_a12/} }
L. D. Kudryavtsev. Functions whose limit values are trigonometric polynomials. Differencialʹnye uravneniâ, Tome 10 (1974) no. 12, pp. 2223-2241. http://geodesic.mathdoc.fr/item/DE_1974_10_12_a12/