deletions | additions       diff --git a/bibliography/refs.bib b/bibliography/refs.bib  index 0381dff..a6ff305 100644  --- a/bibliography/refs.bib  +++ b/bibliography/refs.bib 
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@article{Eysenbach_2011, @article{Eysenbach2011,  title={Can Tweets Predict Citations? Metrics of Social Impact Based on Twitter and Correlation with Traditional Metrics of Scientific Impact},  volume={13},   number={4},