• Design of bioimpedance measurement system using direct carrier compensationAnnus, Paul; Lamp, Jürgen; Min, Mart; Paavle, ToivoProceedings of the European Conference on Circuit Theory and Design : ECCTD'05 : Cork, Ireland, Aug. 29 - Sept. 02, 2005. Vol. III2005 / p. 23-26 https://ieeexplore.ieee.org/document/1523051