@article{IVM_1971_8_a7,
     author = {E. Ya. Melamud},
     title = {Apropos a~certain theorem of {E.~Hille}},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {69--75},
     year = {1971},
     number = {8},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1971_8_a7/}
}