1. E TSI EG 202 848 Human Factors; Inclusive eServices for all: Optimizing the accessibility and the use of upcoming interaction technologies. (Download from www.etsi.org).
2. L. Mathis, Designed for Use - Create Usable Interfaces for Applications and the Web, The Pragmatic Bookshelf, 2011.
3. ARTEMIS Advanced Research & Technology for Embedded Intelligence and Systems. (www.artemis.eu).
4. Project HoliDes (www.holides.eu).