TY  - JOUR
AU  - M. Demlová
TI  - On groups of units in a special class of monoids.
JO  - Semigroup forum
PY  - 1978
SP  - 443
EP  - 454
VL  - 16
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1978__16_134302/
ID  - SF_1978__16_134302
ER  -