%0 Journal Article %A Jakubassa-Amundsen, D.H. %T Localization of the essential spectrum for relativistic $N$-electron ions and atoms %J Documenta mathematica %D 2005 %P 417-445 %V 10 %I mathdoc %U http://geodesic.mathdoc.fr/item/DOCMA_2005__10__a5/ %G en %F DOCMA_2005__10__a5