TY  - JOUR
AU  - Ian Knowles
TI  - On Essential Self-Adjointness for Singular Elliptic Differential Operators.
JO  - Mathematische Annalen
PY  - 1977
SP  - 155
EP  - 172
VL  - 227
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MAN_1977__227_162972/
ID  - MAN_1977__227_162972
ER  -