%0 Journal Article %A Merris, Russell %T The number of eigenvalues greater than two in the Laplacian spectrum of a graph %J Portugaliae mathematica %D 1991 %P 345-349 %V 48 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/PORMA_1991__48_3_115760/ %G en %F PORMA_1991__48_3_115760