Mahata, Shibendu; Saha, Suman Kumar; Kar, Rajib; Mandal, Durbadal: 'Optimal and accurate design of fractional-order digital differentiator – an evolutionary approach', IET Signal Processing, 2017, 11, (2), p. 181-196, DOI: 10.1049/iet-spr.2016.0201
IET Digital Library, https://digital-library.theiet.org/;jsessionid=58q8ofdhlpwt9.x-iet-live-01content/journals/10.1049/iet-spr.2016.0201