Kostas Kafentzis Manolis Wallace Panos Georgolios Panos Alexopoulos Gregoris Mentzas Semantics Enabled Problem Based Brokering of Organizational Knowledge. 131-139 2007 Emerging Artificial Intelligence Applications in Computer Engineering series/faia/2007-160 db/series/faia/faia160.html#KafentzisWGAM07