deletions | additions       diff --git a/bibliography/biblio.bib b/bibliography/biblio.bib  index e382e5b..c6036dd 100644  --- a/bibliography/biblio.bib  +++ b/bibliography/biblio.bib 
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title = {{Energy losses by slow ions and atoms to electronic excitation in solids}},  journal = {Physical Review B},  }  @article{Bethe_1930,  doi = {10.1002/andp.19303970303},  url = {http://dx.doi.org/10.1002/andp.19303970303},  year = {1930},  publisher = {Wiley-Blackwell},  volume = {397},  number = {3},  pages = {325--400},  author = {H. Bethe},  title = {{Zur Theorie des Durchgangs schneller Korpuskularstrahlen durch Materie}},  journal = {Ann. Phys.},  }