deletions | additions       diff --git a/bibliography/biblio.bib b/bibliography/biblio.bib  index 295485a..f543976 100644  --- a/bibliography/biblio.bib  +++ b/bibliography/biblio.bib 
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title = {{The Event-driven Process Chain}},  author = {August-Wilhelm Scheer and Oliver Thomas and Otmar Adam},  }  @incollection{Istoan_2012,  doi = {10.1007/978-3-642-30564-1_2},  url = {http://dx.doi.org/10.1007/978-3-642-30564-1_2},  year = {2012},  publisher = {Springer Science $\mathplus$ Business Media},  pages = {17--34},  author = {Paul Istoan},  title = {{Defining Composition Operators for {BPMN}}},  booktitle = {Software Composition},  }