@article{BaK:99,
   author    = {V. Balakrishnan and R. L. Kashyap},
   title     = {Robust Stability and  Performance Analysis of
                Uncertain Systems Using Linear Matrix Inequalities}, 
   journal={Journal of Optimization Theory and Applications},
   month=mar,
   pages = {457-478},
   volume=100,
   number=3,
   year=1999
}