@article{10_4171_dm_370,
     author = {Jean-Marie Barbaroux and Semjon A. Vugalter},
     title = {On the ground state energy of the translation invariant {Pauli-Fierz} model. {II.}},
     journal = {Documenta mathematica},
     pages = {401--415},
     year = {2012},
     volume = {17},
     doi = {10.4171/dm/370},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/dm/370/}
}