A 2.4-GHz ring-oscillator-based CMOS frequency synthesizer with a fractional divider dual-PLL architecture. - Zhinian Shu; Ka Lok Lee; Bosco H. Leung (IEEE J. Solid State Circuits, 2004)

The effects of spatial autoregressive dependencies on inference in ordinary least squares: a geometric approach. - Tony E. Smith; Ka Lok Lee (J. Geogr. Syst., 2012)