@article{GDZPPN001265008, title = {On the ideal extensions in ordered semigroups.}, journal = {Semigroup forum}, volume = {53}, year = {1996}, pages = {63-71}, zbl = {0848.06012}, url = {http://dml.mathdoc.fr/item/GDZPPN001265008} }
Xie, Xiang-Yun; Wu, Ming-Fen. On the ideal extensions in ordered semigroups.. Semigroup forum, Tome 53 (1996) pp. 63-71. http://gdmltest.u-ga.fr/item/GDZPPN001265008/