deletions | additions       diff --git a/bibliography/biblio.bib b/bibliography/biblio.bib  index 6bb2a4a..ccc9472 100644  --- a/bibliography/biblio.bib  +++ b/bibliography/biblio.bib 
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year = {2014},  url = {{http://www.R-project.org/}},  }  @Manual{lme4,  title = {{lme4: Linear mixed-effects models using Eigen and S4.}},  author = {{Bates D} {Maechler M} {Bolker BM} {Walker S}},  year = {2014},  url = {http://CRAN.R-project.org/package=lme4},  }