TY  - JOUR
AU  - V. V. Fedorchuk
TI  - On a problem of A. N. Tihonov
JO  - Doklady Akademii Nauk
PY  - 1973
SP  - 1297
EP  - 1299
VL  - 210
IS  - 6
UR  - http://geodesic.mathdoc.fr/item/DAN_1973_210_6_a11/
LA  - ru
ID  - DAN_1973_210_6_a11
ER  -