2[2]Bit A K,Biswal M P,Alam S S.Fuzzy programming approach to multicriterial decision making transportation problem[J].Fuzzy Sets and Systems.1992(50):135-141.
3[3]Rakesh Verma,Biswal M P, Biswas A.Fuzzy programming technique to solve multi-objective transportation problems with some non-linear membership functions[J].Fuzzy Sets and Systems,1997,91(1):37-43.
4[5]Leberling H.On finding compromise solutions in multicriteria problems using the fuzzy min-operator[J].Fuzzy Sets and Systems,1981,6(1):105-118.