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@article{IVM_1976_3_a11, author = {V. F. Emel'yanov and S. V. Shvedenko}, title = {A~problem of {P.\,L.~Ul'janov}}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {99--102}, publisher = {mathdoc}, number = {3}, year = {1976}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1976_3_a11/} }
V. F. Emel'yanov; S. V. Shvedenko. A~problem of P.\,L.~Ul'janov. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 3 (1976), pp. 99-102. http://geodesic.mathdoc.fr/item/IVM_1976_3_a11/