TY  - JOUR
AU  - D.C. Jackson
TI  - Direct products of cyclic semigroups and unions of groups.
JO  - Semigroup forum
PY  - 1995
SP  - 223
EP  - 232
VL  - 50
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1995__50_3_135380/
ID  - SF_1995__50_3_135380
ER  -