%0 Journal Article %A Chen, Zhangxin %T The analysis of intergrid transfer operators and multigrid methods for nonconforming finite elements %J Electronic transactions on numerical analysis %D 1997 %P 78-96 %V 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/ETNA_1997__6__a14/ %G en %F ETNA_1997__6__a14