Grabowski, Piotr; Callier, Frank M. On the circle criterion for boundary control systems in factor form: Lyapunov stability and Lur’e equations. (English) Zbl 1105.93044 ESAIM, Control Optim. Calc. Var. 12, 169-197 (2006). MSC: 93D05 93C25 PDFBibTeX XMLCite \textit{P. Grabowski} and \textit{F. M. Callier}, ESAIM, Control Optim. Calc. Var. 12, 169--197 (2006; Zbl 1105.93044) Full Text: DOI Numdam EuDML
Callier, Frank M.; Winkin, Joseph J. The spectral factorization problem for multivariable distributed parameter systems. (English) Zbl 0933.93042 Integral Equations Oper. Theory 34, No. 3, 270-292 (1999). Reviewer: J.Klamka (Katowice) MSC: 93C05 93C35 93C20 93C80 PDFBibTeX XMLCite \textit{F. M. Callier} and \textit{J. J. Winkin}, Integral Equations Oper. Theory 34, No. 3, 270--292 (1999; Zbl 0933.93042) Full Text: DOI