@article{SF_1997__54_2_135522,
     author = {V.H. Fernandes},
     title = {Semigroups of order preserving mappings on a finite chain: a new class of divisors.},
     journal = {Semigroup forum},
     pages = {230--236},
     publisher = {mathdoc},
     volume = {54},
     number = {2},
     year = {1997},
     zbl = {0868.20049},
     url = {http://geodesic.mathdoc.fr/item/SF_1997__54_2_135522/}
}