600 MHz Digitally Controlled BiCMOS Oscillator (DCO) for VLSI Signal Processing & Communication Applications. - Azman M. Yusof; Lim Chu Aun; S. M. Rezaul Hasan (Great Lakes Symposium on VLSI, 1998)

An all Digital BiCMOS Phase Lock Loop for VLSI Processors. - Lim Chu Aun; S. M. Rezaul Hasan (Great Lakes Symposium on VLSI, 1999)