Towards Interoperable Learning Object Repositories: The Ariadne Experience. - Jehad Najjar; Erik Duval; Stefaan Ternier; Filip Neven (ICWI, 2003)

Towards a Global Component Architecture for Learning Objects: An Ontology Based Approach. - Katrien Verbert; Joris Klerkx; Michael Meire; Jehad Najjar; Erik Duval (OTM Workshops, 2004)

Finding Appropriate Learning Objects: An Empirical Evaluation. - Jehad Najjar; Joris Klerkx; Riina Vuorikari; Erik Duval (ECDL, 2005)

Towards Effective Usage-Based Learning Applications: Track and Learn from User Experience(s). - Jehad Najjar; Erik Duval; Martin Wolpers (ICALT, 2006)

Actual Use of Learning Objects and Metadata: An Empirical Analysis. - Jehad Najjar; Erik Duval (Bull. IEEE Tech. Comm. Digit. Libr., 2006)

Tracking Actual Usage: the Attention Metadata Approach. - Martin Wolpers; Jehad Najjar; Katrien Verbert; Erik Duval (J. Educ. Technol. Soc., 2007)

Learning Outcome Based Higher Education: iCoper Use Cases. - Jehad Najjar; Bernd Simon (ICALT, 2009)

The LOM application profile for agricultural learning resources of the CGIAR. - Thomas Zschocke; Jan Beniest; Courtney Paisley; Jehad Najjar; Erik Duval (Int. J. Metadata Semant. Ontologies, 2009)