MathSciNet bibliographic data MR2213691 (2007b:05035) 05B20 Muzychuk, Mikhail; Xiang, Qing Symmetric Bush-type Hadamard matrices of order \$4m\sp 4\$$4m\sp 4$ exist for all odd \$m\$$m$. Proc. Amer. Math. Soc. 134 (2006), no. 8, 2197–2204. Article

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