[1]
Quadros, J.R. de T. et al. 2014. Towards a UML-based Reference Model for Blended Learning. International Journal of Recent Contributions from Engineering, Science & IT (iJES). 2, 3 (Aug. 2014), pp. 15–22. DOI:https://doi.org/10.3991/ijes.v2i3.3818.