Evaluating Lightness Differences under Different Neutral Backgrounds. - Kai Man Raymond Ho; Guihua Cui; M. Ronnier Luo; Bryan Rigg (CGIV, 2002)

A Lightness Difference Formula for Predicting Crispening Effects. - Kai Man Raymond Ho; Guihua Cui; M. Ronnier Luo; Bryan Rigg (CIC, 2002)

Evaluation of Colour Differences against Different Coloured Backgrounds. - Kai Man Raymond Ho; Guihua Cui; Ronnier Luo (CIC, 2007)