1. Britain , S. and Liber, O. (1998 ),A framework for pedagogical evaluation of virtual learning environments, [online] University of Wales. Available from http://www.jtap.ac.uk/reports/htm/jtap-041.html (accessed 12 April 2001).
2. Chan , M. (2000 ), ?The evolution of digital prints - is it an original??, [online] inContrapposto, vol. 15, Chico: California State University. Available from http://www.csuchico.edu/art/contrapposto/contrapposto00/pages/themecontent/chan.html (accessed 20 January 2002).
3. Mason , R. (1998 ), ?Models of on-line courses?, [online] ALN Magazine, 2. Available from http://www.aln.org/alnweb/magazine/vol2/issue2/masonfinal.htm (accessed 21 July 2001).