1. Aström K. J., 2000, Model Uncertainty and Robust Control, COSY project.
2. Bayat F. M. and Afshar M., 2008, Extending the root-locus method to fractional-order systems, Journal of Applied Mathematics, Article ID 528934.
3. Bode H. W., 1949, Network Analysis and Feedback Amplifier Design, Tung Hwa Book Company, Shanghai.
4. Caponetto R., Dongola G., Fortuna L. and Petráš I., 2010, Fractional Order Systems: Modeling and Control Applications, World Scientific, Singapore.
5. Chen Y. Q., 2006, Ubiquitous Fractional Order Controls? Proc. of the Second IFAC Symposium on Fractional Derivatives and Applications (IFAC FDA06), July 19–21, Porto, Portugal.