Design of Mixed-Voltage Crystal Oscillator Circuit in Low-Voltage CMOS Technology. - Ming-Dou Ker; Hung-Tai Liao (ISCAS, 2007)

2xVDD-tolerant crystal oscillator circuit realized with 1xVDD CMOS devices without gate-oxide reliability issue. - Ming-Dou Ker; Tzu-Ming Wang; Hung-Tai Liao (ISCAS, 2008)

Design of Mixed-Voltage-Tolerant Crystal Oscillator Circuit in Low-Voltage CMOS Technology. - Tzu-Ming Wang; Ming-Dou Ker; Hung-Tai Liao (IEEE Trans. Circuits Syst. I Regul. Pap., 2009)