@article {xenos2004assessing, title = {Assessing the quality of web sites used in higher open distance education courses}, journal = {Education, Communication \& Information}, volume = {4}, number = {2-3}, year = {2004}, pages = {237{\textendash}253}, publisher = {Taylor \& Francis}, author = {Xenos, Michalis and Dermitzioti, Evgenia and Christos J. Pierrakeas} }