S. Pohl, F. Radlinski, und T. Joachims. JCDL '07: Proceedings of the 7th ACM/IEEE joint conference on Digital libraries, Seite 417--418. New York, NY, USA, ACM, (2007)
G. Groh, und C. Ehmig. GROUP '07: Proceedings of the 2007 international ACM conference on Supporting group work, Seite 127--136. New York, NY, USA, ACM, (2007)
I. Konstas, V. Stathopoulos, und J. Jose. Proceedings of the 32nd international ACM SIGIR conference on Research and development in information retrieval, Seite 195--202. New York, NY, USA, ACM, (2009)
S. Pohl, F. Radlinski, und T. Joachims. JCDL '07: Proceedings of the 7th ACM/IEEE joint conference on Digital libraries, Seite 417--418. New York, NY, USA, ACM, (2007)
G. Groh, und C. Ehmig. GROUP '07: Proceedings of the 2007 international ACM conference on Supporting group work, Seite 127--136. New York, NY, USA, ACM, (2007)