TY  - JOUR
AU  - I. A. Kuzin
TI  - Comparison theorems for variational problems and their application to elliptic

JO  - Izvestiya. Mathematics 
PY  - 1994
SP  - 331
EP  - 346
VL  - 43
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM2_1994_43_2_a6/
LA  - en
ID  - IM2_1994_43_2_a6
ER  -