**Skew Hadamard difference sets from the Ree-Tits slice symplectic spreads in PG(3,3^{2h+1}),****J. Combinatorial Theory A 114(5) (2007) 867--887.**

**Pseudo-Paley graphs and skew Hadamard difference sets from presemifields,****Designs, Codes and Cryptography 44 (2007) 49-62.**

**Non-abelian skew Hadamard difference sets fixed by a prescribed automorphism,****J. Combinatorial Theory A 118(1) (2011) 27--36.**

**On skew Hadamard difference sets,****preprint**

**Cyclotomic constructions of skew Hadamard difference sets,****J. Combinatorial Theory A 119 (2012) 245--256.****Skew Hadamard difference sets from cyclotomic strongly regular graphs****SIAM J. Discrete Math. 27 (2013) 1112--1122.****Skew Hadamard difference sets from Dickson polynomials of order 7,****J. Combinatorial Designs 23 (2015) 417--461.**