David, Klaus, Lau, Sian Lun and Klein, Bernd Niklas. "Social Link App." IEEE Vehicular Technology Magazine 6 , no. 3 (2011): 80-87.

Klein, Niklas, Lau, Sian Lun and David, Klaus. "Evaluation of the Influence of Time Synchronisation on Classification
arning Based Movement Detection with Accelerometers." Paper presented at the meeting of the The 11th IEEE/IPSJ International Symposium on Applications and the Internet, Munich, Germany, 2011.

Klein, Niklas and David, Klaus. "Basic Approach of Timing in Context Aware Architectures verified by concrete Advantages." Paper presented at the meeting of the Proceedings of The 10th Annual International Symposium on Applications and the Internet, 2010.

Klein, Niklas, Sigg, Stephan, David, Klaus and Beigl, Michael. "DAG Based Context Reasoning: Optimised DAG Creation." Paper presented at the meeting of the Proceedings of Workshop on Context-Systems Design, Evaluation and Optimisation. ARCS 2010 - Architecture of Computing Systems, Hannover, Germany, 2010.

Klein, Niklas and David, Klaus. "Time Locality: A Novel Parameter for Quality of Context." Paper presented at the meeting of the Proceedings of Seventh International Conference on Networked Sensing Systems, 2010.

Lau, Sian Lun, Klein, Niklas, Pirali, Andreas, Droegehorn, Olaf and David, Klaus. "Evaluation of the Technology Agnostic Service Creation Approach." Paper presented at the meeting of the Selbstorganiserende, adaptive, kontextsensitive verteilte Systeme 2010 (SAKS2010), 2010.

Pirali, Andreas, Klein, Niklas, Lau, Sian Lun and David, Klaus. "The context sensitive shopping list." Paper presented at the meeting of the Proceedings of Multikonferenz Wirtschaftsinformatik (MKWI 2010), Göttingen, Germany, 2010.

Lau, Sian Lun, Klein, Niklas, Pirali, Andreas, König, Immanuel and David, Klaus. "Implementation of a User-Centric Context-Aware Playground." Paper presented at the meeting of the Workshops der Wissenschaftlichen Konferenz Kommunikation in Verteilten Systemen 2009 (WowKiVS 2009), 2009.

Droegehorn, Olaf, Lau, Sian Lun, Klein, Niklas, Koenig, Immanuel and Porras, Jari. "Service creation for end-users." Personal, Indoor and Mobile Radio Communications, 2008. PIMRC 2008. IEEE 19th International Symposium on (2008): 1-5.

Klein, Bernd Niklas, Lau, Sian Lun, Pirali, Andreas, Löffler, Tino and David, Klaus. "DAGR - DAG Based Context Reasoning: An Architecture for Context Aware Applications." Paper presented at the meeting of the ASWN '08: Proceedings of the 2008 Eighth International Workshop on Applications and Services in Wireless Networks, Washington, DC, USA, 2008.

Lau, Sian Lun, Klein, Niklas, Pirali, Andreas, Koenig, Immanuel, Droegehorn, Olaf and David, Klaus. "Making Service Creation for (Almost) Everyone." Paper presented at the meeting of the ICT-Mobile Summit 2008, Stockholm, 2008.

Böttcher, Stefan, Steinmetz, Rita and Klein, Niklas. "XML index compression by DTD subtraction." Paper presented at the meeting of the ICEIS (1), 2007.

Klein, Niklas, Groppe, Sven, Böttcher, Stefan and Gruenwald, Le. "A Prototype for Translating XQuery Expressions into XSLT Stylesheets." Paper presented at the meeting of the ADBIS, 2005.