TY  - JOUR
AU  - Grabiner, Sandy
TI  - Ranges of Products of Operators
JO  - Canadian journal of mathematics
PY  - 1974
SP  - 1430
EP  - 1441
VL  - 26
IS  - 6
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1974-137-7/
DO  - 10.4153/CJM-1974-137-7
ID  - 10_4153_CJM_1974_137_7
ER  -