TY  - JOUR
AU  - K. Keimel
TI  - Congruence relations on cone semigroups.
JO  - Semigroup forum
PY  - 1971
SP  - 130
EP  - 147
VL  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1971__3_133855/
ID  - SF_1971__3_133855
ER  -