A. Hotho, R. Jäschke, C. Schmitz, and G. Stumme. Proceedings of the 3rd European Semantic Web Conference, volume 4011 of LNCS, page 411-426. Budva, Montenegro, Springer, (June 2006)
D. Odijk, R. White, A. Hassan Awadallah, and S. Dumais. Proceedings of the 24th ACM International on Conference on Information and Knowledge Management, page 1551--1560. New York, NY, USA, ACM, (2015)
R. Jäschke, and S. Rudolph. Contributions to the 11th International Conference on Formal Concept Analysis, page 19--34. Technische Universität Dresden, (May 2013)
A. Bozzon, T. Iofciu, W. Nejdl, and S. Tönnies. 7th International Conference, ICWE 2007 Como, Italy, July 16-20, volume 4607 of Lecture Notes in Computer Science, page 210 -- 225. Berlin, Heidelberg, Springer Berlin Heidelberg, (2007)
Y. Yanbe, A. Jatowt, S. Nakamura, and K. Tanaka. JCDL '07: Proceedings of the 7th ACM/IEEE-CS joint conference on Digital libraries, page 107--116. New York, NY, USA, ACM, (2007)