The Regular Linear Systems Associated with the Shift Semigroups and Application to Control Linear Systems with Delay. - Said Hadd; Abdelali Idrissi; Abdelaziz Rhandi (Math. Control. Signals Syst., 2006)

Feedback theory for time-varying regular linear systems with input and state delays. - Said Hadd; Abdelaziz Rhandi; Roland Schnaubelt (IMA J. Math. Control. Inf., 2008)