deletions | additions       diff --git a/bibliography/biblio.bib b/bibliography/biblio.bib  index 0964c74..0fa44d2 100644  --- a/bibliography/biblio.bib  +++ b/bibliography/biblio.bib 
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journal = {Pittsburgh University},  year = {1999},  }  @article{fasel2003automatic,  title = {{Automatic facial expression analysis: a survey}},  author = {Fasel, Beat and Luettin, Juergen},  journal = {Pattern recognition},  volume = {36},  number = {1},  pages = {259--275},  year = {2003},  publisher = {Elsevier},  }