TY  - JOUR
AU  - V. M. Isakov
TI  - Inverse theorems on the smoothness of potentials
JO  - Differencialʹnye uravneniâ
PY  - 1975
SP  - 66
EP  - 74
VL  - 11
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1975_11_1_a8/
LA  - ru
ID  - DE_1975_11_1_a8
ER  -