TY  - JOUR
AU  - Jacek Jachymski
TI  - A covering criterion and its applications to product theorems
JO  - Commentationes Mathematicae
PY  - 2005
SP  -  33
EP  - 41
VL  - 45
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.14708/cm.v45i1.5226/
DO  - 10.14708/cm.v45i1.5226
LA  - pl
ID  - 10_14708_cm_v45i1_5226
ER  -