1. R. D. Baker, G. L. Ebert, K. H. Leung, and Q. Xiang, A trace conjecture and flag-transitive affine planes, J. Combin. Theory Ser. A 95 (2001), no. 1, 158–168.[MR]
  2. David B. Chandler and Qing Xiang, Cyclic relative difference sets and their p-ranks, Des. Codes Cryptogr. 30 (2003), no. 3, 325–343.[MR]
  3. Cunsheng Ding, Zeying Wang, and Qing Xiang, Skew Hadamard difference sets from the Ree-Tits slice symplectic spreads in PG(3,32h+1), J. Combin. Theory Ser. A 114 (2007), no. 5, 867–887.[MR/arXiv]
  4. Ronald Evans, Henk D. L. Hollmann, Christian Krattenthaler, and Qing Xiang, Gauss sums, Jacobi sums, and p-ranks of cyclic difference sets, J. Combin. Theory Ser. A 87 (1999), no. 1, 74–119.[MR]
  5. Ka Hin Leung and Qing Xiang, On the dimensions of the binary codes of a class of unitals, Discrete Math. 309 (2009), no. 3, 570–575.[MR/doi]