%0 Journal Article %A G.U. Garba %T Nilpotents in semigroups of partial one-to-one order-preserving mappings. %J Semigroup forum %D 1994 %P 37-49 %V 48 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/SF_1994__48_3_135295/ %F SF_1994__48_3_135295