J. Breuker, A. Muntjewerff, and B. Bredewej, Ontological modelling for designing educational systems, Proceedings of the AI-ED 99 Workshop on Ontologies for Educational Systems, 1999.

J. Davies, D. Fensel, and F. Van-harmelen, Towards the Semantic Web, Ontology-Driven Knowledge Management IMS Reusable Definition of Competency or Educational Objective -XML Binding, Version, IMS, vol.288, p.25, 2002.

M. Klein and D. Fensel, Ontology versioning for the semantic web, International Semantic Web Working Symposium (SWWS), 2001.

R. Koper, Modeling units of study from a pedagogical perspective ? The pedagogical metamodel behind EML Retrieved march, 2002.

M. D. Merrill, Principles of Instructional Design, Educational Technology Publications, vol.465, 1994.

P. Paquette and G. , Instructional Engineering for Network-Based Learning, 2003.

G. Paquette, TeleLearning Systems Engineering ? Towards a new ISD model, Journal of Structural Learning, vol.14, pp.1-35, 2002.

G. Paquette and I. Rosca, Organic Aggregation of Knowledge Object in Educational Systems, Canadian Journal of Learning and Technology / La revue canadienne de l???apprentissage et de la technologie, vol.28, issue.3, pp.11-26, 2002.
DOI : 10.21432/T21K52

G. Paquette, Designing Virtual Learning Centers Handbook on Information Technologies for Education & Training within the Springer-Verlag series "International Handbook on Information Systems, pp.249-272, 2001.

G. Paquette, Meta-knowledge Representation for Learning Scenarios Engineering Proceedings of AI-Ed'99 in AI and Education, open learning environments, 1999.

G. Paquette, I. Rosca, I. De-la-teja, M. Léonard, and K. Lundgren-cayrol, Web-based Support for the Instructional Engineering of E-learning Systems, Paper presented at WebNet'01 Conference, 2001.

A. Rawlings, P. Van-rosmalen, R. Koper, M. Rodriguez-artacho, P. Lefrere et al., Survey of Educational Modelling Languages (EMLs), version 1 Methodology for the Ontology Evolution within a Dynamic and Distributed Environment, p.4, 2002.

Y. Sure and R. Studer, A Methodology for Ontology-Based Knowledge Management, Towards the Semantic Web, pp.33-46, 2003.
DOI : 10.1002/0470858060.ch3

D. A. Wiley, Connecting learning objects to Instructional design theory: a definition, a methaphor, and a taxonomy, The Instructional Use of Learning Objects. Agency for Instructional Technology and Association for Educational Communications of Technology, p.281, 2002.