TY  - JOUR
AU  - V. G. Litvinov
TI  - Optimal control of coefficients in elliptic systems
JO  - Differencialʹnye uravneniâ
PY  - 1982
SP  - 1036
EP  - 1047
VL  - 18
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1982_18_6_a13/
LA  - ru
ID  - DE_1982_18_6_a13
ER  -