Ahmadi, P.; Maundy, B.; Elwakil, A.S.; Belostotski, L.: 'High-quality factor asymmetric-slope band-pass filters: a fractional-order capacitor approach', IET Circuits, Devices & Systems, 2012, 6, (3), p. 187-197, DOI: 10.1049/iet-cds.2011.0239 IET Digital Library, https://digital-library.theiet.org/;jsessionid=1d882t9c1vb97.x-iet-live-01content/journals/10.1049/iet-cds.2011.0239