deletions | additions       diff --git a/bibliography/biblio.bib b/bibliography/biblio.bib  index 8a9773e..b711698 100644  --- a/bibliography/biblio.bib  +++ b/bibliography/biblio.bib 
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month = {January},  year = {2013},  }  @inproceedings{Wallwork_1991,  author = {Wallwork, Michael J.},  title = {{Roundabouts for the U.S.A.}},  booktitle = {ITE},  editor = {Engineers, Institute of Transportation},  publisher = {Institute of Transportation Engineers},  pages = {608-611},  year = {1991},  }