5IMS Global Learning Consortium./MS Learning Design Information Model[DB/OL] . http://www.imsglobal.org/leamingdesign/ldvlpO/ imsld_infov1p0.html.
6IMS Global Learning Consortium. IMS Common Cartridge Profile Version 1.0 Final Specification [DB/OL]. http://www.irnsglobal.org/cc/ccv1p0/imscc profilev1p0.htm.