TY  - JOUR
AU  - H. Länger
TI  - The free algebra in the variety generated by quasi-trivial semigroups
JO  - Semigroup forum
PY  - 1980
SP  - 151
EP  - 156
VL  - 20
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1980__20_134411/
ID  - SF_1980__20_134411
ER  -