1. M. Arenas, A. Bilbao, M.V. Rodrı́guez, M. Jiménez, A fuzzy solution approach to a fuzzy linear goal programming problem, in: G. Fandel, T. Gal (Eds.), Multiple Criteria Decision Making, Lecture Notes in Economics and Mathematical Systems, vol. 448, Springer, New York, 1996, pp. 255–264.
2. M. Arenas, A. Bilbao, M.V. Rodrı́guez, M. Jiménez, Fuzzy parameters multiobjective linear programming problem: solution analysis, in: T.J. Stewart, R.C. Van den Honert (Eds.), Trends in Multicriteria Decision Making, Lecture Notes in Economics and Mathematical Systems, vol. 465, Springer, New York, 1998, pp. 128–137.
3. Decision making in a fuzzy environment;Bellman;Management Sci,1970
4. Goal programming and multiple objective optimisations (Part I);Charnes;European J. Oper. Res,1977
5. On fuzzy goal programming;Hannan;Decision Sci,1981