%0 Journal Article %A Napov, Artem %A Notay, Yvan %T An efficient multigrid method for graph Laplacian systems %J Electronic transactions on numerical analysis %D 2016 %P 201-218 %V 45 %I mathdoc %U http://geodesic.mathdoc.fr/item/ETNA_2016__45__a15/ %G en %F ETNA_2016__45__a15