TY - JOUR AU - N. Kehayopulu AU - M. Tsingelis TI - The embedding of an ordered semigroup into an le-semigroup JO - Lobachevskii journal of mathematics PY - 2003 SP - 45 EP - 50 VL - 13 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/LJM_2003_13_a4/ LA - en ID - LJM_2003_13_a4 ER -