TY  - JOUR
AU  - R.W. Yoh
TI  - Congruence relations on left canonic semigroups.
JO  - Semigroup forum
PY  - 1977
SP  - 175
EP  - 184
VL  - 14
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1977__14_186366/
ID  - SF_1977__14_186366
ER  -