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@article{IVM_1959_6_a21, author = {A. T. Taldykin}, title = {Systems and series of elements with unbounded {Gram} matrices}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {174--188}, publisher = {mathdoc}, number = {6}, year = {1959}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1959_6_a21/} }
A. T. Taldykin. Systems and series of elements with unbounded Gram matrices. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 6 (1959), pp. 174-188. http://geodesic.mathdoc.fr/item/IVM_1959_6_a21/