1. M. Corless, G. Leitmann, and E. Ryan, “Tracking in the presence of bounded uncertainties,” Proc. Fourth Int. Conf. Control Theory, Cambridge, U.K., pp. 220–225, 1984.
2. T. H. Hopp and W. E. Schmitendorf, “Design of a linear controller for robust tracking and model following,” ASME Journal of Dynamic Systems, Measurement, and Control, vol. 112, pp. 552–558, 1990.
3. S. Oucheriah, “Robust tracking and model following of uncertain dynamic delay systems by memoryless linear controllers,” IEEE Trans. Automat. Contr., vol. 44, pp. 1473–1477, 1999.
4. M. L. Ni and M. J. Er, “Robust tracking controllers of uncertain delay systems,” Proc. of the 39th IEEE Conference on Decision and Control, Sydney, Australia, pp. 1539–1543, 2000.
5. H. Wu, “Robust tracking and model following for a class of uncertain dynamical systems by variable structure control,” Proc. of the IEEE International Conference on Control Applications, Anchorage, Alaska, pp. 25–27, 2000.