TY  - JOUR
AU  - Christensen, Ole
TI  - Operators with Closed Range, Pseudo-Inverses, and Perturbation of Frames for a Subspace
JO  - Canadian mathematical bulletin
PY  - 1999
SP  - 37
EP  - 45
VL  - 42
IS  - 1
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1999-004-5/
DO  - 10.4153/CMB-1999-004-5
ID  - 10_4153_CMB_1999_004_5
ER  -