deletions | additions       diff --git a/bibliography/biblio.bib b/bibliography/biblio.bib  index b038439..4cc56e4 100644  --- a/bibliography/biblio.bib  +++ b/bibliography/biblio.bib 
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year = {2013},  organization = {CEUR-WS. org},  }  @incollection{Stokman_1988,  doi = {10.1007/978-3-642-73402-1_12},  url = {http://dx.doi.org/10.1007/978-3-642-73402-1_12},  year = {1988},  publisher = {Springer Science $\mathplus$ Business Media},  pages = {186--206},  author = {Frans N. Stokman and Pieter H. de Vries},  title = {{Structuring Knowledge in a Graph}},  booktitle = {Human-Computer Interaction},  }