@article{DAN_1973_210_6_a11,
     author = {V. V. Fedorchuk},
     title = {On a problem of {A.\,N.~Tihonov}},
     journal = {Doklady Akademii Nauk},
     pages = {1297--1299},
     publisher = {mathdoc},
     volume = {210},
     number = {6},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1973_210_6_a11/}
}