TY  - JOUR
AU  - U. Knauer
TI  - Projectivity of acts and Morita equivalence of monoids.
JO  - Semigroup forum
PY  - 1971
SP  - 359
EP  - 370
VL  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1971__3_133872/
ID  - SF_1971__3_133872
ER  -