TY  - JOUR
AU  - S. B. Rukhlina
TI  - A Class of Extremal Problems for Partial Differential Equations
JO  - Differencialʹnye uravneniâ
PY  - 2002
SP  - 102
EP  - 110
VL  - 38
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_2002_38_1_a15/
LA  - ru
ID  - DE_2002_38_1_a15
ER  -