On stability analysis of multicriteria LP problems with fuzzy parameters. - Elsaid Ebrahim Ammar; Mohamed Abd El-Hady Kassem (Fuzzy Sets Syst., 1996)

A parametric study of multiobjective NLP problems with fuzzy parameters in the objective functions. - Mohamed Abd El-Hady Kassem; Elsaid Ebrahim Ammar (Fuzzy Sets Syst., 1996)

Stability of multiobjective NLP problems with fuzzy parameters in the objectives and constraints functions. - Elsaid Ebrahim Ammar (Fuzzy Sets Syst., 1997)

On some basic notions of fuzzy parametric nonsmooth multiobjective nonlinear fractional programming problems. - Elsaid Ebrahim Ammar (Fuzzy Sets Syst., 1998)

Some properties of convex fuzzy sets and convex fuzzy cones. - Elsaid Ebrahim Ammar (Fuzzy Sets Syst., 1999)