Paper  bibtex   

@article{griffiths_finding_2004,
  added-at = {2009-06-04T20:44:19.000+0200},
  author = {Griffiths, T. L. and Steyvers, M.},
  biburl = {https://www.bibsonomy.org/bibtex/2d64890923898eb2adfed5173528f9563/quesada},
  interhash = {387a5060792d52ea73b02dd68e52559e},
  intrahash = {d64890923898eb2adfed5173528f9563},
  journal = {Proceedings of the National Academy of Sciences},
  keywords = {},
  pages = {5228--5235},
  timestamp = {2009-06-04T20:44:19.000+0200},
  title = {Finding scientific topics},
  url = {http://www.pnas.org/cgi/reprint/0307752101v1.pdf},
  volume = 101,
  year = 2004
}