Zi-Xia Song A further extension of Yap's construction for ?-critical graphs. [Citation Graph (0, 0)][DBLP] Discrete Mathematics, 2002, v:243, n:1-3, pp:283-290 [Journal]

Zi-Xia Song, H. P. Yap Chromatic Index Critical Graphs of Even Order with Five Major Vertices. [Citation Graph (0, 0)][DBLP] Graphs and Combinatorics, 2005, v:21, n:2, pp:239-246 [Journal]

Zi-Xia Song The extremal function for K_{8}^{-} minors. [Citation Graph (0, 0)][DBLP] J. Comb. Theory, Ser. B, 2005, v:95, n:2, pp:300-317 [Journal]