TY  - JOUR
AU  - Rishel, Thomas W.
TI  - Images Of Class- Spaces
JO  - Canadian mathematical bulletin
PY  - 1973
SP  - 323
EP  - 328
VL  - 16
IS  - 3
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1973-052-4/
DO  - 10.4153/CMB-1973-052-4
ID  - 10_4153_CMB_1973_052_4
ER  -