deletions | additions       diff --git a/bibliography/biblio.bib b/bibliography/biblio.bib  index feb8cc1..e0577b0 100644  --- a/bibliography/biblio.bib  +++ b/bibliography/biblio.bib 
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pages = {16},  pubmed_id = {25599966},  }  @incollection{Djorgovski_2013,  doi = {10.1007/978-94-007-5618-2_5},  url = {http://dx.doi.org/10.1007/978-94-007-5618-2_5},  year = {2013},  publisher = {Springer Science $\mathplus$ Business Media},  pages = {223--281},  author = {S. George Djorgovski and Ashish Mahabal and Andrew Drake and Matthew Graham and Ciro Donalek},  title = {{Sky Surveys}},  booktitle = {Planets Stars and Stellar Systems},  }