Automatica, Vol.34, No.12, 1665-1666, 1998
Comments on "Robust control for parameter uncertain delay systems in state and control input"
Kim et al. (1996) presented a robust control design method for parameter uncertain systems with time-varying delays in both state and input. However, the proofs of Lemma 1 and Theorem 1 contain some errors, so the obtained results are incorrect.