@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/}
}