%0 Journal Article %A Chen, Zhibo %T Spectra of extended double cover graphs %J Czechoslovak Mathematical Journal %D 2004 %P 1077-1082 %V 54 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMJ_2004__54_4_a19/ %G en %F CMJ_2004__54_4_a19