TY  - JOUR
AU  - Brown, Arlen
AU  - Pearcy, Carl
TI  - Operators of the form PAQ-QAP
JO  - Canadian journal of mathematics
PY  - 1968
SP  - 1353
EP  - 1361
VL  - 20
IS  - 1
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1968-135-8/
DO  - 10.4153/CJM-1968-135-8
ID  - 10_4153_CJM_1968_135_8
ER  -