[1] Qingsong Zou, Guojun Li and Aijun Dong, Ore-type conditions for bipartite graphs containing hexagons, Discrete Math., 311(2011), 1658-1665.

[2] Qingsong Zou, Hongyu Chen and Guojun Li, Vertex-disjoint cycls of order eight with chords in a bipartite graph, Bull.Malays.Math.Sci.Soc., 36(2013), 255-262.

[3] Qingsong Zou, Guojun Li and Yunshu Gao, Every cycle-connected multipartite tournament with d>1 contains at least two universal arcs, Graphs and Combinatorics, 29(2013), 1141-1149. 

[4] Qingsong Zou, Guojun Li and Shuo Li, On quadrilaterals in a bipartite graph, Journal of Combinatorial Mathemtics and Combintorial Computing, 81(2012), 161-164.

[5] Yunshu Gao and Qingsong Zou, Vertex-Disjoint K₁+(K₁UK₂) in K_1,4-free Graphs with Minimum Degree at Least Four, Acta Mathematica Sinica(English Series), 30(2014), 661-674.

[6] Yunshu Gao and Qingsong Zou, Disjoint K₄^- in claw-free Graphs with minimum Degree at least five, Front. Math. China, 10(2015), 53-68.