deletions | additions       diff --git a/bibliography/biblio.bib b/bibliography/biblio.bib  index 163181e..7f0ba41 100644  --- a/bibliography/biblio.bib  +++ b/bibliography/biblio.bib 
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username = {flint63},  year = {2010},  }  @article{Gruhn_2002,  doi = {10.1023/a:1020522111961},  url = {http://dx.doi.org/10.1023/A:1020522111961},  year = {2002},  publisher = {Springer Science $\mathplus$ Business Media},  volume = {14},  number = {1/4},  pages = {363--382},  author = {Volker Gruhn},  journal = {Annals of Software Engineering},  }