TY  - JOUR
AU  - A. Varisco
AU  - A. Cherubini
TI  - On conditionally commutative semigroups.
JO  - Semigroup forum
PY  - 1981
SP  - 15
EP  - 24
VL  - 23
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1981__23_134500/
ID  - SF_1981__23_134500
ER  -