1. AFT (2000). Distance education: guidelines for good practice American Federation of Teachers, May 2000 [On-line]. Available at: http://www.aft.org.
2. AFT (2001). A virtual revolution: trends in the expansion of distance education. American Federation of Teachers, May 2001 [On-line]. Available at: http://www.aft.org.
3. Managing technological change: strategies for college and university leaders;Bates,2000
4. Keeping online asynchronous discussions on topic;Baudin;Journal of Asynchronous Learning Network,1999
5. The crossroads between life long learning and information technology: a challenge facing leading universities;Beller;Journal of Computer Mediated Communication,1998