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@article{AM2_1978__17_136750, author = {S.A. Vanstone and R.C. Mullin and M. Deza}, title = {Orthogonal systems.}, journal = {Aequationes mathematicae}, pages = {322--330}, publisher = {mathdoc}, volume = {17}, year = {1978}, zbl = {0377.05012}, url = {http://geodesic.mathdoc.fr/item/AM2_1978__17_136750/} }
S.A. Vanstone; R.C. Mullin; M. Deza. Orthogonal systems.. Aequationes mathematicae, Tome 17 (1978), pp. 322-330. http://geodesic.mathdoc.fr/item/AM2_1978__17_136750/