deletions | additions       diff --git a/bibliography/biblio.bib b/bibliography/biblio.bib  index 18e3534..c08ccc0 100644  --- a/bibliography/biblio.bib  +++ b/bibliography/biblio.bib 
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title = {{Density-functional theory of the nonlinear optical susceptibility: Application to cubic semiconductors}},  journal = {Physical Review B},  }  @article{Cohen_2008,  doi = {10.1126/science.1158722},  url = {http://dx.doi.org/10.1126/science.1158722},  year = {2008},  month = {aug},  publisher = {American Association for the Advancement of Science ({AAAS})},  volume = {321},  number = {5890},  pages = {792--794},  author = {A. J. Cohen and P. Mori-Sanchez and W. Yang},  title = {{Insights into Current Limitations of Density Functional Theory}},  journal = {Science},  }