1. Robustness measure bounds for optimal model matching control designs
2. A general theory for matrix root-clustering in subregions of the complex plane
3. KOLLA , S. R. , FARISON , J. B. , and YEDAVALLI , R. K. , 1988 , Slate space model perturbation bounds for robust stability of linear discrete-time systems , Proc. 31st Midwest Symposium on Circuits and Systems , St. Louis , Missouri , pp. 343 – 346 .
4. PATEL , R. V. , and TODA , M. , 1980 , Quantitative measures of robustness for multivariable systems , Proc. Joint Automatic Control Conference , San Francisco .
5. Perturbation bounds for robust stability in linear state space models