An iterative method for tri-level quadratic fractional programming problems using fuzzy goal programming approach
Subject Areas : Mathematical OptimizationSemu Mitiku Kassa 1 , Teklay Hailay Tsegay 2
                                               1 -     Department of Mathematics, Addis Ababa University, P.O. Box 1176, Addis Ababa, Ethiopia|Department of Mathematics and Statistical Sciences, Botswana International University of Science and Technology (BIUST), P/Bag Mail 16, Palapye, Botswana
                                               
                                               2 -     Department of Mathematics, Wollo University, P.O. Box 1145, Dessie, Ethiopia
                                               
                                       
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