%0 Journal Article %A Steve Butler %A Jason Grout %T A construction of cospectral graphs for the normalized Laplacian %J The electronic journal of combinatorics %D 2011 %V 18 %N 1 %U http://geodesic.mathdoc.fr/articles/10.37236/718/ %R 10.37236/718 %F 10_37236_718