title: integrating the ub-tree into a database system kernel. authors: f ramsak , v markl , r fenk , m zirkel , k elhardt , r bayer. venue: vldb. year: 2000
title: integrating the ub-tree into a database system kernel. authors: f ramsak , v markl , r fenk , m zirkel , k elhardt , r. venue: vldb ,. year: 2000.0