TY  - JOUR
AU  - Sara Baase
TI  - ...-length of union of groups semigroups.
JO  - Semigroup forum
PY  - 1974
SP  - 215
EP  - 244
VL  - 8
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1974__8_134040/
ID  - SF_1974__8_134040
ER  -