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@article{IVM_1990_4_a4, author = {A. V. Kasyanchuk}, title = {Problems on the convergence of series in systems $\{f(\tau\sp nx)\}^\infty_{n=0}$}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {29--33}, publisher = {mathdoc}, number = {4}, year = {1990}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1990_4_a4/} }
A. V. Kasyanchuk. Problems on the convergence of series in systems $\{f(\tau\sp nx)\}^\infty_{n=0}$. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 4 (1990), pp. 29-33. http://geodesic.mathdoc.fr/item/IVM_1990_4_a4/