1. Paulsen, M.: Experiences with Learning Management Systems in 113 European Institutions. Educational Technology & Society 6(4), 134–148 (2003)
2. Owston, R.: A Meta-Evaluation of Six Case Studies of Web-based Learning. Presented at the Annual Meeting of the American Educational Research Association (AERA), New Orleans, Louisiana, USA (2000)
3. Serwatka, J.: Improving Retention in Distance Learning Classes. International Journal of Instructional Technology and Distance Learning 2(1), 59–64 (2005)
4. Anaraki, F.: Developing an Effective and Efficient eLearning Platform. International Journal of The Computer, the Internet and Management 12(2), 57–63 (2004)
5. Kamel Boulos, M.N., Taylor, A.D., Breton, A.: A Synchronous Communication Experiment within an Online Distance Learning Program: A Case Study. Telemedicine Journal and e-Health 11(5), 583–593 (2005)