Geodesic
Structure and automorphism groups of Hadamard designs
Journal of Algebraic Combinatorics, Tome 24 (2006) no. 2, pp. 137-155.

Voir la notice de l'article provenant de la source Electronic Library of Mathematics

Summary: Let $n$ be the order of a Hadamard design, and $G$ any finite group. Then there exists many non-isomorphic Hadamard designs of order $2 ^{12|G| + 13} n$ with automorphism group isomorphic to $G$.
Keywords: keywords Hadamard designs, automorphisms of designs 
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     title = {Structure and automorphism groups of {Hadamard} designs},
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Merchant, Eric. Structure and automorphism groups of Hadamard designs. Journal of Algebraic Combinatorics, Tome 24 (2006) no. 2, pp. 137-155. http://geodesic.mathdoc.fr/item/JAC_2006__24_2_a3/