@article{DE_1973_9_2_a14,
     author = {A. P. Soldatov},
     title = {A certain problem of the theory of functions},
     journal = {Differencialʹnye uravneni\^a},
     pages = {325--332},
     publisher = {mathdoc},
     volume = {9},
     number = {2},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1973_9_2_a14/}
}