@article{RM_1965_20_2_a14,
     author = {A. M. Olevskii},
     title = {On a~problem of {P.} {L.~Ul'yanov}},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     year = {1965},
     volume = {20},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/RM_1965_20_2_a14/}
}