TY  - JOUR
AU  - M. Parmenter
TI  - Exact covering systems for groups
JO  - Fundamenta Mathematicae
PY  - 1984
SP  - 133
EP  - 136
VL  - 123
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/fm-123-2-133-136/
DO  - 10.4064/fm-123-2-133-136
LA  - en
ID  - 10_4064_fm_123_2_133_136
ER  -