deletions | additions       diff --git a/bibliography/biblio.bib b/bibliography/biblio.bib  index d139e93..4cca194 100644  --- a/bibliography/biblio.bib  +++ b/bibliography/biblio.bib 
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author = {Ember, Carol and Hanisch, Robert},  url = {http://datacommunity.icpsr.umich.edu/sites/default/files/WhitePaper_ICPSR_SDRDD_121113.pdf},  year = {2013},  }  @misc{ivoa,  title = {{International Virtual Observatory Alliance}},  url = {http://ivoa.net},  }