Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1961_138_3_a12, author = {A. M. Olevskii}, title = {Divergent series for complete systems in $L^2$}, journal = {Doklady Akademii Nauk}, pages = {545--548}, publisher = {mathdoc}, volume = {138}, number = {3}, year = {1961}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1961_138_3_a12/} }
A. M. Olevskii. Divergent series for complete systems in $L^2$. Doklady Akademii Nauk, Tome 138 (1961) no. 3, pp. 545-548. http://geodesic.mathdoc.fr/item/DAN_1961_138_3_a12/