1. Robust Control: the Parameter Space Approach;Ackermann,2002
2. Ackermann, J., Kaesbauer, D., and Muench, R. (1991). Robust gamma-stability analysis in a plant parameter space. Automatica.
3. Design of PI and PID controllers with transient performance specification;Basilio;IEEE Transactions on Education,2002
4. Frazer, R.A. and Duncan, W.J. (1929). On the Criteria for the Stability of Small Motions. Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences.
5. Introduction to modeling and control of internal combustion engine systems;Guzzella,2010