TY  - JOUR
AU  - A. E. Fryntov
TI  - An extremal problem of potential theory
JO  - Doklady Akademii Nauk
PY  - 1988
SP  - 819
EP  - 820
VL  - 300
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1988_300_4_a11/
LA  - ru
ID  - DAN_1988_300_4_a11
ER  -