@article{1636,
  author = {S. Campana and P. Romano and S. Covino and D. Lazzati and A. De Luca and G. Chincarini and A. Moretti and G. Tagliaferri and G. Cusumano and P. Giommi and V. Mangano and M. Perri and V. La Parola and M. Capalbi and T. Mineo and L. Antonelli and David Burrows and J. Hill and J. Racusin and J. Kennea and D. Morris and C. Pagani and J. Nousek and J. Osborne and M. Goad and K. Page and A. Beardmore and O. Godet and P. O'Brien and A. Wells and L. Angelini and N. Gehrels},
  title = {Evidence for intrinsic absorption in the Swift X-ray afterglows},
  year = {2006},
  journal = {Astronomy and Astrophysics},
  volume = {449},
  pages = {61-65},
  month = {Jan-04-2006},
  issn = {0004-6361},
  url = {http://www.aanda.org/10.1051/0004-6361:20053823},
  doi = {10.1051/0004-6361:20053823},
}