1. European Broadcasting Union: multimedia homepage of the European Broadcast Union (EBU), Geneva, Switzerland. http://www.ebu.ch/en/multimedia/index.php
2. British Broadcasting Corporation: enhanced TV formats. http://www.bbc.co.uk/commissioning/interactive/
3. Smart-M3 software at sourceforge.net, release 0.9.4beta, May 2010. [Online]. http://sourceforge.net/projects/smart-m3/
4. Kaustell a, saleemi MM, Rosqvist T, Jokiniemi J, Lilius J, Porres I (2011) Framework for smart space application development. In: Proceedings of the international workshop on semantic interoperability, IWsI
5. Oliver I, Honkola J (2008) Personal semantic web through a space based computing environment. In: Proceedings of the 2nd international conference on semantic, computing