TY  - JOUR
AU  - A. K. Kerimov
TI  - Sufficient conditions for optimality in an extremal problem with a~free boundary
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 1988
SP  - 87
EP  - 105
VL  - 185
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TM_1988_185_a7/
LA  - ru
ID  - TM_1988_185_a7
ER  -