deletions | additions       diff --git a/bibliography/biblio.bib b/bibliography/biblio.bib  index a56a8ea..066dce4 100644  --- a/bibliography/biblio.bib  +++ b/bibliography/biblio.bib 
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pages = {2219-27},  pubmed_id = {21792570},  }  @article{23408979,  title = {{Potential theory for directed networks.}},  date = {2013},  source = {PLoS One},  authors = {Zhang, QM and Lü, L and Wang, WQ and Zhu, YX and Zhou, T},  author = {Zhang, QM and Lü, L and Wang, WQ and Zhu, YX and Zhou, T},  year = {2013},  month = {},  journal = {PLoS One},  volume = {8},  number = {},  pages = {e55437},  pubmed_id = {23408979},  }