Rego, Hugo, Tiago Moreira, Erla Morales, and Francisco José Garcia. 2010. “Metadata and Knowledge Management Driven Web-Based Learning Information System towards Web E-Learning 3.0”. International Journal of Emerging Technologies in Learning (iJET) 5 (2):pp. 36-44. https://doi.org/10.3991/ijet.v5i2.1222.