High-level Database Document Specifications Using XML. - Kris Cardinaels; Erik Duval; Henk J. Olivié (WebNet, 1998)

Semantic and Pedagogic Interoperability Mechanisms in the ARIADNE Educational Repository. - Eddy Forte; Florence Haenni; Ken Warkentyne; Erik Duval; Kris Cardinaels; E. Vervaet; Koen Hendrikx; Maria Wentland Forte; Florence Simillion (SIGMOD Rec., 1999)

The Ariadne knowledge pool system. - Erik Duval; Eddy Forte; Kris Cardinaels; Bart Verhoeven; Rafaël Van Durm; Koen Hendrikx; Maria Wentland Forte; Norbert Ebel; Maciej Macowicz; Ken Warkentyne; Florence Haenni (Commun. ACM, 2001)

Automating metadata generation: the simple indexing interface. - Kris Cardinaels; Michael Meire; Erik Duval (WWW, 2005)

A Formal Model of Learning Object Metadata. - Kris Cardinaels; Erik Duval; Henk J. Olivié (EC-TEL, 2006)