@inproceedings{Koopmans:2004jS,
  author = "Koopmans, Leon",
  title = "{Dark-Matter and Baryons in Early-type Lens Galaxies}",
  doi = "10.22323/1.014.0066",
  booktitle = "Proceedings of Baryons in Dark Matter Halos {\textemdash} PoS(BDMH2004)",
  year = 2004,
  volume = "014",
  pages = "066"
}