Lower bound on the weakly connected domination number of a cycle-disjoint graph. - Khee Meng Koh; T. S. Ting; Z. L. Xu; Feng Ming Dong (Australas. J Comb., 2010)

A characterisation of cycle-disjoint graphs with unique minimum weakly connected dominating set. - Khee Meng Koh; T. S. Ting; Feng Ming Dong (Australas. J Comb., 2012)

Reversing arcs in transitive tournaments to obtain maximum number of spanning cycles. - Khee Meng Koh; T. S. Ting (Ars Comb., 2013)