title: the x-tree : an index structure for high-dimensional data. authors: s berchtold , d keim , h kriegel. venue: vldb. year: 1996
title: the x-tree : an index structure for highdimensional data . 2 & nd vldb. authors: s berchtold , da keim , hp kriegel. venue: mumbai ( bombay ) , india , sept ,. year: nan