PaperSpecifying Queries as Relational Expressions: The SQUARE Data SublanguageRaymond F. Boyce, Donald D. Chamberlin, et al.CACM
Conference paperSemantic concept-based query expansion and re-ranking for multimedia retrievalApostol Natsev, Alexander Haubold, et al.MMSP 2007
Conference paperStrong and flexible domain typing for dynamic E-businessYigal Hoffner, Simon Field, et al.EDOC 2004