1. PID controllers: Theory, design, and tuning;Åström,1995
2. μ-Analysis and synthesis toolbox;Balas,1993
3. LQG control with an H∞ performance bound;Bernstein;IEEE Transactions on Automatic Control,1989
4. Robust control: The parametric approach;Bhattacharyya,1995
5. A survey of computational complexity results in systems and control;Blondel;Automatica,2000