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@article{IVM_1961_1_a6, author = {Ya. I. Zhitomirskii}, title = {On a theorem of {Liouville} type}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {66--76}, publisher = {mathdoc}, number = {1}, year = {1961}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1961_1_a6/} }
Ya. I. Zhitomirskii. On a theorem of Liouville type. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 1 (1961), pp. 66-76. http://geodesic.mathdoc.fr/item/IVM_1961_1_a6/