Islam, S. M. M., M. A. R. Reza, and M. A. Kiber. “Performances of Multi-Frequency Voltage to Current Converters for Bioimpedance Spectroscopy”. Bangladesh Journal of Medical Physics, vol. 5, no. 1, Apr. 2013, pp. 71-76, doi:10.3329/bjmp.v5i1.14671.