@article{938,
  author = {Mitchell Begelman},
  title = {Evidence for Black Holes},
  year = {2003},
  journal = {Science},
  volume = {300},
  pages = {1898-1903},
  month = {06/2003},
  issn = {0036-8075},
  doi = {10.1126/science.1085334},
}