Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1971_198_6_a8, author = {M. F. Timan and G. Gaimnazarov}, title = {Best approximations and absolute convergence of {Fourier--Haar} series}, journal = {Doklady Akademii Nauk}, pages = {1280--1282}, publisher = {mathdoc}, volume = {198}, number = {6}, year = {1971}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1971_198_6_a8/} }
M. F. Timan; G. Gaimnazarov. Best approximations and absolute convergence of Fourier--Haar series. Doklady Akademii Nauk, Tome 198 (1971) no. 6, pp. 1280-1282. http://geodesic.mathdoc.fr/item/DAN_1971_198_6_a8/