deletions | additions       diff --git a/bibliography/biblio.bib b/bibliography/biblio.bib  index 29842a3..9575a09 100644  --- a/bibliography/biblio.bib  +++ b/bibliography/biblio.bib 
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year = {2013},  publisher = {Sage publications},  }  @book{yin2011applications,  title = {{Applications of case study research}},  author = {Yin, Robert K},  year = {2011},  publisher = {Sage},  }