@article{1790,
  author = {D. Lazzati and Mitchell Begelman},
  title = {Thick Fireballs and the Steep Decay in the Early X-Ray Afterglow of Gamma-Ray Bursts},
  year = {2006},
  journal = {The Astrophysical Journal},
  volume = {641},
  pages = {972-977},
  month = {04/2006},
  issn = {0004-637X},
  doi = {10.1086/500502},
}