TY  - JOUR
AU  - B.-W. Schulze
TI  - The inverse problem for higher order elliptic equations
JO  - Differencialʹnye uravneniâ
PY  - 1977
SP  - 2265
EP  - 2271
VL  - 13
IS  - 12
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1977_13_12_a16/
LA  - ru
ID  - DE_1977_13_12_a16
ER  -