Purely analog fractional order PI control using discrete fractional capacitors (fractors): Synthesis and experiments
Mukhopadhyay, S., C. Coopmans, and Y Chen. 2009. “Purely Analog Fractional Order PI Control Using Discrete Fractional Capacitors (fractors): Synthesis and Experiments”. In Proceedings of the ASME Design Engineering Technical Conference, 4:1307-14.