deletions | additions       diff --git a/bibliography/biblio.bib b/bibliography/biblio.bib  index 1b9d89a..2607c6c 100644  --- a/bibliography/biblio.bib  +++ b/bibliography/biblio.bib 
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journal = {Proceedings of the National Academy of Sciences},  }  @book{1997,  doi = {10.1007/978-1-4899-0262-7},  url = {http://dx.doi.org/10.1007/978-1-4899-0262-7},  year = {1997},  publisher = {Springer {US}},  editor = {M. C. Tringides},  title = {{Surface Diffusion}},  }  @book{Tringides_1997,  doi = {10.1007/978-1-4899-0262-7},  url = {http://dx.doi.org/10.1007/978-1-4899-0262-7},  year = {1997},  publisher = {Springer {US}},  author = {M. C. Tringides}  editor = {M. C. Tringides},  title = {{Surface Diffusion}},  }