%0 Journal Article %A N. Kehayopulu %A M. Tsingelis %T The embedding of an ordered semigroup into an le-semigroup %J Lobachevskii journal of mathematics %D 2003 %P 45-50 %V 13 %I mathdoc %U http://geodesic.mathdoc.fr/item/LJM_2003_13_a4/ %G en %F LJM_2003_13_a4