TY  - JOUR
AU  - Palle E.T. Jorgensen
TI  - Approximately Invariant Subspaces for Unbounded Linear Operators. II.
JO  - Mathematische Annalen
PY  - 1977
SP  - 177
EP  - 182
VL  - 227
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MAN_1977__227_162974/
ID  - MAN_1977__227_162974
ER  -