1. Practical Bilevel Optimization: Algorithm and Applications;Bard,1998
2. Foundation of Bilevel Programming;Dempe,2002
3. Computational difficulity of bilevel linear programming;Ben-Ayed;Operations Research,1990
4. On two-level optimization;Bialas;IEEE Transaction on Automatic Control,1982
5. Fuzzy and Multi-Level Decision Making: An Interactive Computational Approach;Lee,2001