title: semantic and pedagogic interoperability mechanisms in the ariadne educational repository. authors: e forte , f haenni , k warkentyne , e duval , k cardinaels , e vervaet , k hendrikx , m forte , f simillion. venue: sigmod record. year: 1999
title: semantic and pedagogic interoperability mechanisms in the ariadne educational repository. authors: e forte , f haenni , k warkentyne , e duval , k. venue: sigmod record ,. year: 1999.0