1. W. Ahmad, R. El-Khazali, Fractional order passive low-pass filters, in Proceedings of the ICECS, (2003), pp. 160–163
2. P. Ahmadi, B. Maundy, A.S. Elwakil, L. Belostotski, Band-pass filters with high quality factors and asymmetric-slope characteristics, in IEEE 54th International Midwest Symposium on Circuits and Systems (MWSCAS), August 2011, pp. 1–4
3. K. Biswas, S. Sen, P.K. Dutta, Realization of a constant phase element and its performance study in a differentiator circuit. IEEE Trans. Circuits Syst. II 53, 802–806 (2006)
4. R. Caponetto, G. Dongola, L. Fortuna, I. Petras, Fractional Order Systems: Modeling and Control Applications (World Scientific, Singapore, 2010)
5. R. Caponetto, L. Fortuna, D. Porto, A new tuning strategy for a non-integer order pid controller, in First IFAC Workshop on Fractional Differentiation and Its Application, vol. 40, (2004), pp. 168–173