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@article{IVM_1959_4_a16, author = {A. I. Povolotskii}, title = {Eigenvectors on hyperboloids in {Hilbert} space}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {126--140}, publisher = {mathdoc}, number = {4}, year = {1959}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1959_4_a16/} }
A. I. Povolotskii. Eigenvectors on hyperboloids in Hilbert space. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 4 (1959), pp. 126-140. http://geodesic.mathdoc.fr/item/IVM_1959_4_a16/