@inbook{steyvers_griffiths07,
  author = {Steyvers, M. and Griffiths, T.},
  chapter = {Probabilistic topic models},
  editor = {Landauer, T. and McNamara, S. Dennis and Kintsch, W.},
  interhash = {4b2ab9b5eecc61ba49087d932b25f11c},
  intrahash = {ab33268b60e8774bdfe46cd50a970fa3},
  owner = {gregor},
  publisher = {Laurence Erlbaum},
  timestamp = {2008.02.26},
  title = {Latent Semantic Analysis: A Road to Meaning},
  year = 2007
}

@article{buntine2002variational,
  author = {Buntine, W.},
  interhash = {12e54792e55b4f6ec694ae7b2af352f6},
  intrahash = {e8920842d95355c880fd8b9dafbf4fc1},
  journal = {Lecture notes in computer science},
  pages = {23--34},
  publisher = {Springer},
  title = {{Variational extensions to EM and multinomial PCA}},
  url = {http://scholar.google.de/scholar.bib?q=info:2EiODWPLMzEJ:scholar.google.com/&output=citation&hl=de&ct=citation&cd=0},
  year = 2002
}