deletions | additions       diff --git a/bibliography/biblio.bib b/bibliography/biblio.bib  index b0a16d5..0cb982f 100644  --- a/bibliography/biblio.bib  +++ b/bibliography/biblio.bib 
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year = {2002},  pages = {42},  }  @article{Hyd_n_2000,  doi = {10.1016/s0001-4575(99)00044-5},  url = {http://dx.doi.org/10.1016/s0001-4575(99)00044-5},  year = {2000},  month = {Jan},  publisher = {Elsevier BV},  volume = {32},  number = {1},  pages = {11-23},  author = {Christer Hyd\'en and Andr\'as V\'arhelyi},  title = {{The effects on safety time consumption and environment of large scale use of roundabouts in an urban area: a case study}},  journal = {Accident Analysis \& Prevention},  }