TY - JOUR AU - David Müller TI - Minimax principles, Hardy-Dirac inequalities, and operator cores for two and three dimensional Coulomb-Dirac operators JO - Documenta mathematica PY - 2016 SP - 1151 EP - 1169 VL - 21 UR - http://geodesic.mathdoc.fr/articles/10.4171/dm/554/ DO - 10.4171/dm/554 ID - 10_4171_dm_554 ER -