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http://learning.ncsa.uiuc.edu/papers/elearnlit.pdf
2. Khan, B.H.: Learning Features in an Open, Flexible, and Distributed Environment. AACE Journal 13(2), 137–153 (2005)
3. Gartner says cloud computing will be as influential as E-business,
http://www.gartner.com/it/page.jsp?id=707508
4. EMC Corporation: Deploying a Virtual Infrastructure for SAP with EMC and VMware Technologies,
http://www.vmware.com/files/pdf/deploying_vi_sap_emc_vmware_tech.pdf
5. Dong, B., Zheng, Q., Yang, J., Li, H., Qiao, M.: An E-learning Ecosystem Based on Cloud Computing Infrastructure. In: 9th IEEE International Conference on Advanced Learning Technologies, pp. 125–127. IEEE Press, Latvia (2009)