TY  - JOUR
AU  - Ju.M. Vazenin
TI  - On the elementary theory of free inverse semigroups.
JO  - Semigroup forum
PY  - 1974
SP  - 189
EP  - 195
VL  - 9
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1974__9_134076/
ID  - SF_1974__9_134076
ER  -