@article{10_4171_dm_93,
     author = {Norbert R\"ohrl and Raymond Brummelhuis and Heinz Siedentop},
     title = {Stability of the relativistic electron-positron field of atoms in {Hartree-Fock} approximation: {Heavy} elements},
     journal = {Documenta mathematica},
     pages = {1--8},
     year = {2001},
     volume = {6},
     doi = {10.4171/dm/93},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/dm/93/}
}