World news finder: How we cope without the semantic web. - Leonidas Kallipolitis; Vassilis Karpis; Isambo Karali (Artificial Intelligence and Applications, 2007)

Semantic search in the World News domain using automatically extracted metadata files. - Leonidas Kallipolitis; Vassilis Karpis; Isambo Karali (Knowl. Based Syst., 2012)