Aspects of using chirp excitation for estimation of bioimpedance spectrumPaavle, Toivo; Min, Mart; Parve, ToomasFourier transform - signal processing2012 / p. 237-256 : ill https://www.researchgate.net/publication/224830116_Aspects_of_Using_Chirp_Excitation_for_Estimation_of_Bioimpedance_Spectrum