deletions | additions       diff --git a/bibliography/biblio.bib b/bibliography/biblio.bib  index 0f2d76d..ef8f42d 100644  --- a/bibliography/biblio.bib  +++ b/bibliography/biblio.bib 
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@misc{Ziegler_2011_PIC,  author = {James F. Ziegler and M.D. Ziegler and J.P. Biersack},  title = {{Hydrogen in Copper}},  howpublished = {{{{{{{{{{{{{{{{{{{{{{http://www.srim.org/SRIM/SRIMPICS/STOP01/STOP0129.gif}}}}}}}}}}}}}}}}}}}}}}}, {{{{{{{{{{{{{{{{{{{{{{{http://www.srim.org/SRIM/SRIMPICS/STOP01/STOP0129.gif}}}}}}}}}}}}}}}}}}}}}}}},  year = {2011},  note = {[Online; accessed 21-Aug-2015]},  } 
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author = {Peter Sigmund},  title = {{Particle Penetration and Radiation Effects Volume 2}},  }  @incollection{Nastasi_1996,  doi = {10.1017/cbo9780511565007.006},  url = {http://dx.doi.org/10.1017/cbo9780511565007.006},  year = {1996},  publisher = {Cambridge University Press ({CUP})},  pages = {88--114},  author = {Michael Nastasi and James Mayer and James K. Hirvonen},  title = {{Ion stopping}},  booktitle = {Ion{\textendash}solid Interactions},  }