deletions | additions       diff --git a/bibliography/biblio.bib b/bibliography/biblio.bib  index 992ab35..7f17ad4 100644  --- a/bibliography/biblio.bib  +++ b/bibliography/biblio.bib 
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url = {http://dx.doi.org/10.6028/NIST.IR.7898},  doi = {10.6028/nist.ir.7898},  publisher = {National Institute of Standards and Technology},  author = {Warren {Warren,  James A. and Boisvert, Ronald F.}, year = {2012},  month = {Nov},  } 
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title= {Creative Commons License 3.0},  url={http://creativecommons.org/licenses/by/3.0/}  }  @article{downs,  title={The American Mineralogist cyrstal structure database},  author={Downs, Robert T.