A Generic Metadata Query Tool. - Bart Verhoeven; Erik Duval; Henk J. Olivié (WebNet, 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)