@article{GDZPPN00202912X, title = {Orthogonal designs II.}, journal = {Aequationes mathematicae}, volume = {13}, year = {1975}, pages = {299-314}, language = {en}, url = {http://dml.mathdoc.fr/item/GDZPPN00202912X} }
Geramita, A.V.; Seberry Wallis, J. Orthogonal designs II.. Aequationes mathematicae, Tome 13 (1975) pp. 299-314. http://gdmltest.u-ga.fr/item/GDZPPN00202912X/