TY - JOUR AU - Jakubassa-Amundsen, D.H. TI - Localization of the essential spectrum for relativistic $N$-electron ions and atoms JO - Documenta mathematica PY - 2005 SP - 417 EP - 445 VL - 10 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DOCMA_2005__10__a5/ LA - en ID - DOCMA_2005__10__a5 ER -