TY  - JOUR
AU  - E. G. Sitnikova
TI  - A~strong zero theorem for an elliptic equation of high order
JO  - Sbornik. Mathematics
PY  - 1970
SP  - 349
EP  - 367
VL  - 10
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SM_1970_10_3_a4/
LA  - en
ID  - SM_1970_10_3_a4
ER  -