8Anderson,C.(2OO6).The Long Tail:Why the Future of Business is Selling Less of More[M].CA:Hyperion.
9Siemens.G.(2OO5).Connectivism:A Learning Theory for the Digital Age[J/OL].[2011-11-01].http:/www.elearnspace. org/Articles/Connectivism.htm.
10Nilsson, M., Palmer,M. & Naeve,A.(2OO2).Semantic Web Metadata for e-Learning-Some Architectural Guidelines. [EB/OL].[2011-11-01 ],http://www2002.org/CDROM/alternate/744.
