id: 70826763 dt: a an: 70826763 au: Al-Hamdani, Abdullah; Özsoyoglu, Gultekin ti: Selecting topics for web resource discovery: efficiency issues in a database approach so: DEXA, 792-802 (2003). py: 2003 pu: la: EN cc: ut: ci: li: doi:10.1007/978-3-540-45227-0_77