@ARTICLE{
author={Jovanovic Jelena M,Gasevic Dragan,Torniai Carlo,Bateman Scott,Hatala Marek},
year={2009},
title={The Social Semantic Web in Intelligent Learning Environments: state of the art and future challenges},
journal={INTERACTIVE LEARNING ENVIRONMENTS},
volume={17},
number={4},
pages={273-309},
document_type={Article},
}