deletions | additions       diff --git a/bibliography/biblio.bib b/bibliography/biblio.bib  index 0733f02..64a4839 100644  --- a/bibliography/biblio.bib  +++ b/bibliography/biblio.bib 
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adsurl = {http://adsabs.harvard.edu/abs/2012EAS....56..267P},  adsnote = {Provided by the SAO/NASA Astrophysics Data System},  }  @article{Kurtz_2010,  doi = {10.1002/aris.2010.1440440108},  url = {http://dx.doi.org/10.1002/aris.2010.1440440108},  year = {2010},  publisher = {Wiley-Blackwell},  volume = {44},  number = {1},  pages = {1--64},  author = {Michael J. Kurtz and Johan Bollen},  title = {{Usage bibliometrics}},  journal = {Annual Review of Information Science and Technology},  }