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2. Caldarola, F., Maiolo, M., Solferino, V.: A new approach to the Z-transform through infinite computation. Commun. Nonlinear Sci. Numer. Simul. 82, 105019 (2020)
3. Bessel filter. https://en.wikipedia.org/wiki/Bessel_filter. Accessed 21 Aug 2021
4. Butterworth filter. https://en.wikipedia.org/wiki/Butterworth_filter. Accessed 21 Aug 2021
5. Chebyshev filter. https://en.wikipedia.org/wiki/Chebyshev_filter. Accessed 21 Aug 2021