@ARTICLE{
author={Jovanovic Jelena M,Gasevic Dragan,Verbert Katrien,Duval Erik},
year={2005},
title={Ontology of Learning Object Content Structure},
journal={ARTIFICIAL INTELLIGENCE IN EDUCATION - SUPPORTING LEARNING THROUGH INTELLIGENT AND SOCIALLY INFORMED TECHNOLOGY},
volume={125},
number={},
pages={322-329},
document_type={Proceedings Paper},
} 

@ARTICLE{
author={Verbert Katrien,Jovanovic Jelena M,Gasevic Dragan,Duval Erik},
year={2005},
title={Repurposing learning object components},
journal={ON THE MOVE TO MEANINGFUL INTERNET SYSTEMS 2005: OTM 2005 WORKSHOPS, PROCEEDINGS},
volume={3762},
number={},
pages={1169-1178},
document_type={Article},
}