TY  - JOUR
AU  - T. Tamura
TI  - Finite union of commutative power joined semigroups.
JO  - Semigroup forum
PY  - 1970
SP  - 75
EP  - 84
VL  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1970__1_133779/
ID  - SF_1970__1_133779
ER  -