%0 Journal Article %A Gradinaru, V. %A Hiptmair, R. %T Whitney elements on pyramids %J Electronic transactions on numerical analysis %D 1999 %P 154-168 %V 8 %I mathdoc %U http://geodesic.mathdoc.fr/item/ETNA_1999__8__a0/ %G en %F ETNA_1999__8__a0