Generalized clique coverings of chordal graphs. - W. D. Wallis; Julin Wu (Australas. J Comb., 1990)

On clique partitions of split graphs. - W. D. Wallis; Julin Wu (Discret. Math., 1991)

Squares, clique graphs, and chordality. - W. D. Wallis; Julin Wu (J. Graph Theory, 1995)

or Which Graphs Does Every Edge Belong to Exactly Two Chordless Cycles? - Uri N. Peled; Julin Wu (Electron. J. Comb., 1996)

Restricted unimodular chordal graphs. - Uri N. Peled; Julin Wu (J. Graph Theory, 1999)