TY  - JOUR
AU  - G.M.S. Gomes
AU  - J.M. Howie
TI  - On the ranks of certain semigroups of order-preserving  transformations.
JO  - Semigroup forum
PY  - 1992
SP  - 272
EP  - 282
VL  - 45
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1992__45_3_135191/
ID  - SF_1992__45_3_135191
ER  -