@article{SF_1996__53_2_135497,
     author = {N. Kehayopulu and M. Tsingelis},
     title = {The embedding of an ordered semigroup in a simple one with identity.},
     journal = {Semigroup forum},
     pages = {346--350},
     publisher = {mathdoc},
     volume = {53},
     number = {2},
     year = {1996},
     zbl = {0862.06004},
     url = {http://geodesic.mathdoc.fr/item/SF_1996__53_2_135497/}
}