deletions | additions       diff --git a/bibliography/refs.bib b/bibliography/refs.bib  index 4c42262..6b89c33 100644  --- a/bibliography/refs.bib  +++ b/bibliography/refs.bib 
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Year = {2006},  Bdsk-Url-1 = {http://dx.doi.org/10.1002/asi.20373}}  @article{eysen, @article{Eysenbach2011,  Author = {Eysenbach, Gunther},  Journal = {Journal of Medical Internet Research},  Number = {4},  Pages = {1060--1072}, {123},  Title = {Can Tweets Predict Citations? Metrics of Social Impact Based on Twitter and Correlation with Traditional Metrics of Scientific Impact},  Volume = {13},  Year = {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},  Journal = {Journal of Medical Internet Research},  Author = {Eysenbach, Gunther},  Year = {2011},  Month = {Dec},   Pages = {123},}  @inproceedings{weller:2011,  Author = {Katrin Weller and Evelyn Dr\"oge and Cornelius Puschmann},  Booktitle = {Making Sense of Microposts {(\#MSM2011)}},