deletions | additions       diff --git a/bibliography/biblio.bib b/bibliography/biblio.bib  index cc86cde..8b253cf 100644  --- a/bibliography/biblio.bib  +++ b/bibliography/biblio.bib 
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title = {{ggplot2: Elegant Graphics for Data Analysis by {WICKHAM} H.}},  journal = {Biometrics},  }  @article{Pruitt_2004,  doi = {10.1093/nar/gki025},  url = {http://dx.doi.org/10.1093/nar/gki025},  year = {2004},  month = {dec},  publisher = {Oxford University Press ({OUP})},  volume = {33},  number = {Database issue},  pages = {D501--D504},  author = {K. D. Pruitt},  title = {{{NCBI} Reference Sequence ({RefSeq}): a curated non-redundant sequence database of genomes transcripts and proteins}},  journal = {Nucleic Acids Research},  }