%0 Journal Article
%A Aida Abiad
%A Willem H Haemers
%T Cospectral graphs and regular orthogonal matrices of level 2
%J The electronic journal of combinatorics
%D 2012
%V 19
%N 3
%U http://geodesic.mathdoc.fr/articles/10.37236/2383/
%R 10.37236/2383
%F 10_37236_2383