1. The impact of instant messenger services in class settings, including distance learning;Jeong,2002
2. The potential of modern telelearning tools for collaborative learning;Katz;Canadian Journal of Communication,1999
3. Kessler, M. (2002, May 28). Instant messaging at work can open door to hackers [Electronic version]. USA Today. Retrieved June 21, 2002 from http://www.usatoday.com/money/tech/2002-05-29-im-security.htm.
4. Interaction and outeraction: instant messaging in action;Nardi,2000
5. Piccinini, N. (2002). VPN Firewall Appliance from ESoft: Internet Security Technology. Retrieved June 21, 2002 from http://www.esoft.com/press_detail.cfm?ID=33.