M. Kersten, and G. Murphy. SIGSOFT '06/FSE-14: Proceedings of the 14th ACM SIGSOFT international symposium on Foundations of software engineering, page 1--11. New York, NY, USA, ACM Press, (2006)
X. Ochoa, and E. Duval. CAMA '06: Proceedings of the 1st international workshop on Contextualized attention metadata: collecting, managing and exploiting of rich usage information, page 9--16. New York, NY, USA, ACM Press, (2006)
A. Rath, M. Kröll, S. Lindstaedt, and M. Granitzer. ProKW2007 Productive Knowledge Work - Management and Technological Challenges GITO Gmbh, Berlin, (March 2007)