Title : 
A Counterexample Of "comments On "stability Margin Evaluation For Uncertain Linear Systems"\´
         
        
            Author : 
Cao, Yong-Yan ; Sun, You-Yian
         
        
        
        
        
        
        
            Keywords : 
Algebra; Filtering; Linear systems; Nonlinear filters; Partial differential equations; Stability; Stochastic systems; Sun; Time varying systems; Uncertainty;
         
        
        
            Journal_Title : 
Automatic Control, IEEE Transactions on
         
        
        
        
        
            DOI : 
10.1109/TAC.1997.649733