TY  - JOUR
AU  - FERNANDES, VÍTOR H.
TI  - NORMALLY ORDERED SEMIGROUPS
JO  - Glasgow mathematical journal
PY  - 2008
SP  - 325
EP  - 333
VL  - 50
IS  - 2
UR  - http://geodesic.mathdoc.fr/articles/10.1017/S0017089508004230/
DO  - 10.1017/S0017089508004230
ID  - 10_1017_S0017089508004230
ER  -