@article{10_4171_dm_274,
     author = {Matthias Huber},
     title = {Spectral analysis of relativistic atoms -- {Dirac} operators with singular potentials},
     journal = {Documenta mathematica},
     pages = {297--338},
     year = {2009},
     volume = {14},
     doi = {10.4171/dm/274},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/dm/274/}
}