TY  - JOUR
AU  - N. N. Frolov
TI  - On the hypoellipticity of infinite-dimensional differential operators
JO  - Sbornik. Mathematics
PY  - 1977
SP  - 269
EP  - 278
VL  - 31
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SM_1977_31_2_a9/
LA  - en
ID  - SM_1977_31_2_a9
ER  -