Harada, M., Lam, C., Munemasa, A., & Tonchev, V. D. (2010). Classification of Generalized Hadamard Matrices $H(6,3)$ and Quaternary Hermitian Self-Dual Codes of Length 18. The Electronic Journal of Combinatorics, 17(1), R171. https://doi.org/10.37236/443