%0 Journal Article %A C.S. Hoo %A K.P. Shum %T Prime radical theorem on ordered semigroups. %J Semigroup forum %D 1980 %P 87-94 %V 19 %I mathdoc %U http://geodesic.mathdoc.fr/item/SF_1980__19_134371/ %F SF_1980__19_134371