TY  - JOUR
AU  - S. Bulman-Fleming
AU  - K. McDowell
TI  - Flatness and projectivity in commutative regular semigroups.
JO  - Semigroup forum
PY  - 1980
SP  - 247
EP  - 260
VL  - 19
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1980__19_134386/
ID  - SF_1980__19_134386
ER  -