deletions | additions       diff --git a/bibliography/biblio.bib b/bibliography/biblio.bib  index 2123cdc..fff60bb 100644  --- a/bibliography/biblio.bib  +++ b/bibliography/biblio.bib 
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@article{cite:8, author = {R. Liouville and G. Bernoulli},  title = {On {{On  the Positivity of Conditionally Closed, Right-Simply Contravariant Scalars}, Scalars}},  journal = {{J}ournal of Numerical Geometry},  month = aug, {aug},  year = 1993, {1993},  volume = 6, {6},  pages = {152--191}} {152--191},  }  @book{Stokes_2008,  doi = {10.1002/9780470758731},  url = {http://dx.doi.org/10.1002/9780470758731},  year = {2008},  month = {nov},  publisher = {Wiley-Blackwell},  author = {Debbie J Stokes},  title = {{Principles and Practice of Variable Pressure/Environmental Scanning Electron Microscopy ({VP}-{ESEM})}},  }