1. A characterization of integral input to state stability;Angeli;IEEE Trans. Automat. Control,2000
2. Hereditary control problems: numerical methods based on averaging approximations;Banks;SIAM J. Control Optim.,1978
3. T.A. Burton, Stability and periodic solutions of ordinary and functional differential equations, Mathematics in Science and Engineering, vol. 178, Academic Press, New York, 1985.
4. M.C. Delfour, Status of the State Space Theory of Linear Hereditary Differential Systems with Delays in State and Control Variables, Lecture Notes in Control and Information Sciences, vol. 28, Springer, Berlin, New York, 1980.
5. Input–output linearization with delay cancellation for nonlinear delay systems: the problem of the internal stability;Germani;Internat. J. Robust Nonlinear Control (Special Issue on Time Delay Systems),2003