The d-relaxed game chromatic index of k-degenerated graphs. - Hungyung Chang; Xuding Zhu (Australas. J Comb., 2006)

Colouring games on outerplanar graphs and trees. - Hungyung Chang; Xuding Zhu (Discret. Math., 2009)

Tutte polynomials and G-parking functions. - Hungyung Chang; Jun Ma 017; Yeong-Nan Yeh (Adv. Appl. Math., 2010)

Value-Peaks of Permutations. - Pierre Bouchard; Hungyung Chang; Jun Ma 017; Jean Yeh; Yeong-Nan Yeh (Electron. J. Comb., 2010)