1. ABA : Industry Standards on Accessibility of Electronic Banking. Available: http://www.bankers.asn.au/ (2003)
2. Architectural and Transportation Barriers Compliance Board: Telecommunication Act accessibility guidelines. Available: http://www.access-board.gov/telecomm/rule.htm (1998)
3. Architectural and Transportation Barriers Compliance Board: Electronic and Information Technology Accessibility Standards. Available: http://www.access-board.gov/sec508/standards.htm (2000)
4. Ball, L., Evans, B., Dennis, I.: Cognitive processes in engineering design: a longitudinal study. Ergonomics 37(11), 1753–1786 (1994)
5. Barker T.T.: Writing Software Documentation: A Task-oriented Approach. Allyn & Bacon, Boston (1998)