TY  - JOUR
AU  - M. I. Freidlin
TI  - On the smoothness of solutions of degenerate elliptic equations
JO  - Izvestiya. Mathematics 
PY  - 1968
SP  - 1337
EP  - 1359
VL  - 2
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM2_1968_2_6_a7/
LA  - en
ID  - IM2_1968_2_6_a7
ER  -