Madalina Croitoru Bo Hu Srinandan Dasmahapatra Paul H. Lewis David Dupplaw Alex Gibb Margarida Julià-Sapé Javier Vicente Carlos Sáez Juan Miguel García-Gómez Roman Roset Francesc Estanyol Xavier Rafael Palou Mariola Mier Conceptual Graphs Based Information Retrieval in HealthAgents. 618-623 2007 conf/cbms/2007 CBMS http://doi.ieeecomputersociety.org/10.1109/CBMS.2007.36 db/conf/cbms/cbms2007.html#CroitoruHDLDGJVSGRERM07