Global convergent algorithm for the bilevel linear
fractional-linear programming based on
modified convex simplex method
Guangmin Wang1,Bing Jiang1,Kejun Zhu1,and Zhongping Wan2
Journal of Systems Engineering and Electronics . 2010, (2): 239 -243 .  DOI: 10.3969/j.issn.1004-4132.2010.02.011