@article{MZM_1969_5_3_a9,
     author = {Yu. L. Shmul'yan},
     title = {A~class of holomorphic operator functions},
     journal = {Matemati\v{c}eskie zametki},
     pages = {351--359},
     publisher = {mathdoc},
     volume = {5},
     number = {3},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1969_5_3_a9/}
}