1. Regan, K.: U.S.: E-Commerce Topped $45B in 2002. E-Commerce Times (2003)
2. ACM Committee on Computers and Public Policy, P.G. Neumann, moderator: The Risk Digest, Forum On Risks To The Publi. In Computers And Related Systems (1985–2003),
http://catless.ncl.ac.uk/Risks/
3. Lecture Notes in Computer Science;E. Brinksma,2000
4. Fielding, R., Gettys, J., Mogul, J.C., Frystyk, H., Masinter, L., Leach, P., Berners-Lee, T.: Hypertext transfer protocol – HTTP/1.1. RFC 2616. The Internet Society, Network Working Group (1999)
5. Rice, J., Farquhar, A., Piernot, P., Gruber, T.: Using the web instead of a window system. In: Proceedings Human Factors in Computing Systems, CHI 1996 Conference, Vancouver, B.C, Canada, pp. 103–110 (1996)