@article{Koopmans:2004jS,
  author = "Koopmans, Leon",
  title = "{Dark-Matter and Baryons in Early-type Lens Galaxies}",
  doi = "10.22323/1.014.0066",
  journal = "PoS",
  year = 2004,
  volume = "BDMH2004",
  pages = "066"
}