%0 Journal Article %A Lindner, C. C. %A Mullin, R. C. %A Hoffman, D. G. %T The Spectra for the Conjugate Invariant Subgroups of n 2 × 4 Orthogonal Arrays %J Canadian journal of mathematics %D 1980 %P 1126-1139 %V 32 %N 5 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1980-086-9/ %R 10.4153/CJM-1980-086-9 %F 10_4153_CJM_1980_086_9