TY  - JOUR
AU  - Z. Liu
TI  - A characterization of regular monoids by flatness of left acts.
JO  - Semigroup forum
PY  - 1993
SP  - 85
EP  - 89
VL  - 46
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1993__46_1_135214/
ID  - SF_1993__46_1_135214
ER  -