TY  - JOUR
AU  - N.M. Khan
TI  - Epimorphisms, dominions and varieties of semigroups.
JO  - Semigroup forum
PY  - 1982
SP  - 331
EP  - 338
VL  - 25
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1982__25_134582/
ID  - SF_1982__25_134582
ER  -