deletions | additions       diff --git a/bibliography/biblio.bib b/bibliography/biblio.bib  index 3ac22fe..6f05219 100644  --- a/bibliography/biblio.bib  +++ b/bibliography/biblio.bib 
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pages = {36-44},  year = {1997},  }  @article{Hauer_2009,  doi = {10.3141/2103-02},  url = {http://dx.doi.org/10.3141/2103-02},  year = {2009},  month = {Sep},  publisher = {Transportation Research Board},  volume = {2103},  number = {-1},  pages = {10-17},  author = {Ezra Hauer},  title = {{Speed and Safety}},  journal = {Transportation Research Record: Journal of the Transportation Research Board},  }