Andreas Barthel

Front end with offset-free symmetrical current source optimized for time domain impedance spectroscopy

Thomas Nacke, Dieter Beckmann, Uwe Pliquett, 2011, Physiological measurement.

Time-domain based impedance measurement : strengths and drawbacks

Thomas Nacke, Dieter Frense, Markus Schönfeldt, 2013 .

Signals in bioimpedance measurement: different waveforms for different tasks

Paul Annus, Mart Min, Raul Land, 2007 .