X. Gu, Some torsion classes in the Chow ring and cohomology of BPGL_n, to appear in J. Lond. Math. Soc., DOI:10.1112/jlms.12368, arXiv: 1901.10090.
X. Gu, The topological period-index problem over 8-complexes, II, to appear in Proc. Amer. Math. Soc., DOI: 10.1090/proc/15112, arXiv:1803.05100.
X. Gu, The topological period-index problem over 8-complexes, I, J. Topol, 12.4 (2019): 1368-1395. DOI: https://doi.org/10.1112/topo.12119, arXiv:1709.00787.
X. Gu, On the cohomology of the classifying spaces of projective unitary groups, J. Topol. Anal., online ready. DOI：https://doi.org/10.1142/S1793525320500211, arXiv:1612.00506.
X. Gu, On the Brown-Peterson cohomology of BPU_n in lower dimensions and the Thom map, arXiv: 2005.03107.
D Crowley, X. Gu, and C Haesemeyer, On the topological period-index problem over 8-manifolds, arXiv:1911.07206.
X. Gu, X Wang and J Wu, The cohomology ring of S(3) and its application to stable homotopy groups of spheres, submitted, arXiv:1903.02730.