4Downes, S. ( 2006 ). Learning Networks and Connective Knowledge[ DB/OL] . http://it, coe. uga. edu/ifforum/paper92/paper92, html.
5Jovanovic, J. , Gasevic, D. , Knight, C. , & Richards, G.(2007). Ontologies for effective use of context in e-Learning settings[ J]. I Educational Technology & Society, 10 (3) : 47-59.
