1. Clark, C.: The Conditions of Economic Progress. Macmillan and Co. (1940)
2. ISO/IEC 13407:1999. Human-Centred Design Processes for Interactive Systems (1999)
3. ISO 9241-11:1998. Ergonomic Requirements for Office Work with Visual Display Terminals (VDTs) – Part 11: Guidance on Usability (1998)
4. ISO 9241-210:2010. Ergonomics of Human-System Interaction - Human-Centred Design for Interactive Systems (2010)
5. Kindsmuller, M.C., Mahlke, S.: MMI-Interaktiv Nr. 13 (2007),
http://useworld.net/mmijij/ue