xAnVi - An Extensible Visualization and Analysis Framework. - Jan Griebsch; Oliver Arafat; Wolfram Koska (IV, 2006)

The Commit Size Distribution of Open Source Software. - Oliver Arafat; Dirk Riehle (HICSS, 2009)

The comment density of open source software code. - Oliver Arafat; Dirk Riehle (ICSE Companion, 2009)

The commenting practice of open source. - Oliver Arafat; Dirk Riehle (OOPSLA Companion, 2009)