Querying Data Sources in a SuperPeer Data Management System. - Hélène Jaudoin; Michel Schneider; Frédéric Vigier (FQAS, 2004)

Spatial Constraint Modelling with a GIS Extension of UML and OCL: Application to Agricultural Information Systems. - François Pinet; Myoung-Ah Kang; Frédéric Vigier (Metainformatics, 2004)