@markgritter https://arxiv.org/abs/1803.08787 /Symmetric Hadamard matrices of orders 268, 412, 436 and 604/ N.A. Balonin, D.Z. Djokovic
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@markgritter https://arxiv.org/abs/1803.08787 /Symmetric Hadamard matrices of orders 268, 412, 436 and 604/ N.A. Balonin, D.Z. Djokovic