TY  - JOUR
AU  - W.D. Munn
TI  - Free inverse semigroups.
JO  - Semigroup forum
PY  - 1972
SP  - 262
EP  - 269
VL  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1972__5_133944/
ID  - SF_1972__5_133944
ER  -