TY  - JOUR
AU  - Garba, G.U.
TI  - On the idempotent ranks of certain semigroups of order-preserving transformations.
JO  - Portugaliae mathematica
PY  - 1994
SP  - 185
EP  - 204
VL  - 51
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/PORMA_1994__51_2_47075/
LA  - en
ID  - PORMA_1994__51_2_47075
ER  -