Evaluation of Chip LED Sensor Module for Fat Thickness Measurement using Tissue Phantoms. - In-Duk Hwang; Kunsoo Shin; Dong-Su Ho; Beop Min Kim (EMBC, 2006)

Direct Interference Canceling for Two-Electrode Biopotential Amplifier. - In-Duk Hwang; John G. Webster (IEEE Trans. Biomed. Eng., 2008)