1. Sensitivity and robustness properties of the Smith controller;Nordström,1985
2. Control of Time Delay Systems;Marshall,1979
3. Frequency domain properties of Otto Smith regulators;Åström;Internat. J. Control,1977
4. Synthesis of Feedback Systems;Horowitz,1963
5. K. Nordström, On the trade-off between noise sensitivity and robustness for LQG-regulators, Internal Report LiTH-ISY-I-0704, Linköping University, Dept. of Electrical Engineering.