1. Adaptive Technology Center Indiana University Bloomington,
http://www.indiana.edu/~iuadapts/convers2.html
2. Hemphill, C., Thrift, P.: Surfing the Web by Voice. In: Proceedings of ACM Multimedia, San Francisco, CA, November 7-9, 1995, pp. 215–222 (1995)
3. Lecture Notes in Computer Science;C.N. Chu,2002
4. Computer Industry Almanac Inc. USA tops 160M Internet Users (December 16, 2002)
http://www.c-i-a.com/pr1202.htm
5. IBM Accessibility Center
http://www-306.ibm.com/able/