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@article{IVM_1968_6_a3, author = {E. A. Bredikhina}, title = {A~theorem of {Sidon} on lacunary {Fourier} series}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {21--27}, publisher = {mathdoc}, number = {6}, year = {1968}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1968_6_a3/} }
E. A. Bredikhina. A~theorem of Sidon on lacunary Fourier series. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 6 (1968), pp. 21-27. http://geodesic.mathdoc.fr/item/IVM_1968_6_a3/