Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MZM_1967_1_4_a15, author = {A. M. Olevskii}, title = {Fourier series in orthogonal systems}, journal = {Matemati\v{c}eskie zametki}, pages = {501--507}, publisher = {mathdoc}, volume = {1}, number = {4}, year = {1967}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1967_1_4_a15/} }
A. M. Olevskii. Fourier series in orthogonal systems. Matematičeskie zametki, Tome 1 (1967) no. 4, pp. 501-507. http://geodesic.mathdoc.fr/item/MZM_1967_1_4_a15/