@article{05141789,
title = {Fuzzy ideals extensions of ordered semigroups.},
journal = {Lobachevskii Journal of Mathematics},
volume = {17},
year = {2005},
pages = {29-40},
zbl = {1119.06011},
language = {en},
url = {http://dml.mathdoc.fr/item/05141789}
}
Xie, Xiang-Yun; Yan, Feng. Fuzzy ideals extensions of ordered semigroups.. Lobachevskii Journal of Mathematics, Tome 17 (2005) pp. 29-40. http://gdmltest.u-ga.fr/item/05141789/