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@article{DAN_1976_228_2_a5, author = {B. S. Kashin}, title = {On orthogonal systems of convergence}, journal = {Doklady Akademii Nauk}, pages = {285--286}, publisher = {mathdoc}, volume = {228}, number = {2}, year = {1976}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1976_228_2_a5/} }
B. S. Kashin. On orthogonal systems of convergence. Doklady Akademii Nauk, Tome 228 (1976) no. 2, pp. 285-286. http://geodesic.mathdoc.fr/item/DAN_1976_228_2_a5/