A note on the perturbation of the W-weighted Drazin inverse. - Yimin Wei 001; Ching-Wah Woo; Tiangang Lei (Appl. Math. Comput., 2004)

Condition numbers and structured perturbation of the W-weighted Drazin inverse. - Tiangang Lei; Yimin Wei 001; Ching-Wah Woo (Appl. Math. Comput., 2005)

On the critical group of graph Möbius ladder. - Pingge Chen; Yaoping Hou; Ching-Wah Woo (Australas. J Comb., 2006)