TY  - JOUR
AU  - S. Lajos
TI  - A characterization of semilattices of  left groups
JO  - Matematički vesnik
PY  - 1972
SP  - 363 
VL  - 24
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MV_1972_24_1_a46/
ID  - MV_1972_24_1_a46
ER  -