Yeong-Shin Jang, Hoai Nam Nguyen, Seung-Tak Ryu, Sang Gug Lee,"Yield-Ensuring DAC-Embedded Opamp Design Based on Accurate Behavioral Model Development", IEICE TRANSACTIONS on Electronics Vol.E93-C No.6 pp.935-937, June, 2010.
Huy-Hieu Nguyen,Jeong-Seon Lee, and Sang-Gug Lee, "Low Voltage Current-Reused Pseudo-Differential Programmable Gain Amplifier" IEICE Transaction, Vol.E93-C,No.1, pp.-, Jan. 2010.
Ha Le-Thai, Huy-Hieu Nguyen, Hoai-Nam Nguyen, Hong-su Cho, Jeong-Seon Lee and Sang Gug Lee"An IF Band-pass Filter Based on A Low Distortion Transconductor", IEEE Journal of Solid-State Circuits, Vol.45, No.11, pp. 2250-2261, Nov. 2010.