Markus Schönfeldt

Offset-free bidirectional current source for impedance measurement

A. Barthel, Thomas Nacke, Dieter Frense, 2010 .

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

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

Testing miniaturized electrodes for impedance measurements within the β-dispersion – a practical approach

Yong Zhang, A. Barthel, U. Pliquett, 2010 .

Time-domain based impedance measurement : strengths and drawbacks

Thomas Nacke, Dieter Frense, Markus Schönfeldt, 2013 .