TY  - JOUR
AU  - Jan Waszkiewicz
TI  - A remark on Engeler's filter-images
JO  - Colloquium Mathematicum
PY  - 1970
SP  - 165
EP  - 167
VL  - 21
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/cm-21-2-165-167/
DO  - 10.4064/cm-21-2-165-167
LA  - de
ID  - 10_4064_cm_21_2_165_167
ER  -