1. Seberry, J., Whiteman, A.L. New Hadaraard matrices and conference matrices obtained via Mathon’s construction. Graphs Comb.4, 355–377 (1988)
2. Seberry, J., Yamada, M. Hadamard matrices, sequences and block designs, in: J. Dinitz, D. Stinson (eds) Contemporary Design Theory. Wiley-Interscience Series in Discrete Mathematics, New York: John Wiley 431–560 (1992)
3. Baumert, L.D. Hall, J.M. Hadamard matrices of Williamson type. Math. Comp.,19, 442–447 (1965)
4. Yamamoto, K. On a generalized Williamson equation. Colloq. Math. Soc. Janos Bolyai,37, 839–850 (1981)
5. Yamamoto, K., Yamada, M. Williamson matrices of Turyn’s type and Gauss sums. J. Math. Soc. Japan,37, 703–717 (1985)