A Simple Model for Adaptive Courseware Navigation. - Denise Pilar da Silva; Rafaël Van Durm; Koen Hendrikx; Erik Duval; Henk J. Olivié (WebNet, 1997)

Adaptive Navigational Facilities in Educational Hypermedia. - Denise Pilar da Silva; Rafaël Van Durm; Erik Duval; Henk J. Olivié (Hypertext, 1998)

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)