TY - JOUR AU - Muhammad Shabir AU - Asghar Khan TI - Fuzzy Quasi-Ideals of Ordered Semigroups JO - Bulletin of the Malaysian Mathematical Society PY - 2011 VL - 34 IS - 1 UR - http://geodesic.mathdoc.fr/item/BMMS_2011_34_1_a7/ ID - BMMS_2011_34_1_a7 ER -