TY  - JOUR
AU  - Korec, Ivan
TI  - Disjoint covering systems and product-invariant relations
JO  - Mathematica slovaca
PY  - 1985
SP  - 233
EP  - 237
VL  - 35
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MASLO_1985__35_3_a3/
LA  - en
ID  - MASLO_1985__35_3_a3
ER  -