J. Link, M. Büttner, D. Dallinger, and J. Richter. Working Papers "Sustainability and Innovation", S3/2010. Fraunhofer Institute for Systems and Innovation Research (ISI), (2010)
H. Borstell, L. Cao, K. Richter, and C. Schäfer. Future Security, volume 318 of Communications in Computer and Information Science, page 25-28. Springer, (2012)
A. Roßnagel, P. Richter, and M. Nebel. Buchmann (Hrsg.), Internet Privacy: Eine multidisziplinäre Bestandsaufnahme/ A multidisciplinary analysis (acatech STUDIE), (2012)
K. Strater, and H. Lipford. Proceedings of the 22nd British HCI Group Annual Conference on People and Computers: Culture, Creativity, Interaction - Volume 1, page 111--119. Swinton, UK, UK, British Computer Society, (2008)
K. Richter, and S. Winter. Advances in Spatial and Temporal Databases, volume 6849 of Lecture Notes in Computer Science, Springer, Berlin / Heidelberg, (2011)