@article{1183527796,
author = {Yang, C. H.},
title = {A construction for maximal $\left( { + 1, - 1} \right)$-matrix of order $54$},
journal = {Bull. Amer. Math. Soc.},
volume = {72},
number = {4},
year = {1966},
language = {en},
url = {http://dml.mathdoc.fr/item/1183527796}
}
Yang, C. H. A construction for maximal $\left( { + 1, - 1} \right)$-matrix of order $54$. Bull. Amer. Math. Soc., Tome 72 (1966) no. 4, . http://gdmltest.u-ga.fr/item/1183527796/