deletions | additions       diff --git a/bibliography/biblio.bib b/bibliography/biblio.bib  index 59db553..96d5ee7 100644  --- a/bibliography/biblio.bib  +++ b/bibliography/biblio.bib 
...
@Book{,  author = {Hadley Wickham},  title = {ggplot2: elegant graphics for data analysis},  publisher = {Springer New York},  year = {2009},  isbn = {978-0-387-98140-6},  url = {http://had.co.nz/ggplot2/book},  }  @article{23955772,  title = {{UPARSE: highly accurate OTU sequences from microbial amplicon reads.}},  date = {2013 Oct},