deletions | additions       diff --git a/bibliography/refs.bib b/bibliography/refs.bib  index 1d9d27c..4c42262 100644  --- a/bibliography/refs.bib  +++ b/bibliography/refs.bib 
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@article{eysen,  Author = {Eysenbach, Gunther},  Date-Modified = {2012-01-23 19:07:47 -0500},  Journal = {Journal of Medical Internet Research},  Number = {4},  Pages = {1060--1072},  Title = {Can Tweets Predict Citations? Metrics of Social Impact Based on Twitter and Correlation with Traditional Metrics of Scientific Impact},  Volume = {13},  Year = {2006}} {2011}}  @article{Eysenbach2011,   Title = {Can Tweets Predict Citations? Metrics of Social Impact Based on Twitter and Correlation with Traditional Metrics of Scientific Impact},