TY  - JOUR
AU  - A. Varisco
AU  - Spoletini A. Cherubini
TI  - Quasi commutative semigroups and a-reflective semigroups.
JO  - Semigroup forum
PY  - 1980
SP  - 313
EP  - 322
VL  - 19
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1980__19_134391/
ID  - SF_1980__19_134391
ER  -