title: speeding up construction of pmr quadtree-based spatial indexes. authors: gísli r. hjaltason , hanan samet. venue: vldb j.. year: 2002
title: speeding up construction of pmr quadtree-based spatial indexes. authors: gisli r. hjaltason , hanan samet. venue: the vldb journal -- the international journal on very large data bases. year: 2002