@article{10_4171_dm_330,
     author = {M. Koenenberg},
     title = {An infinite level atom coupled to a heat bath},
     journal = {Documenta mathematica},
     pages = {177--208},
     year = {2011},
     volume = {16},
     doi = {10.4171/dm/330},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/dm/330/}
}