1. SCORM Users guide for programmers. Technical report, ADL (2011). URL
http://www.adlnet.gov/wp-content/uploads/2011/12/SCORM_Users_Guide_for_Programmers.pdf
2. SCORM 2004 4th Edition Specification. Technical report, ADL (2011). URL
http://www.adlnet.gov/wp-content/uploads/2011/07/SCORM_2004_4ED_v1_1_Doc_Suite.zip
3. Andersen, P.: What is Web 2.0?: ideas, technologies and implications for education, vol. 1. JISC Bristol, UK (2007)
4. Lecture Notes in Computer Science;A Auinger,2009
5. Bafoutsou, G., Mentzas, G.: Review and functional classification of collaborative systems. Int. J. Inf. Manage. 22(4), 281–305 (2002)