title: efficient and effective clustering methods for spatial data mining. authors: r ng , j han. venue: vldb. year: 1994
title: ã cents â ? ¬ â ? cents efficient and effective clustering methods for spatial data miningã cents â ? ¬ â ? cents. authors: rt ng , j han. venue: proc . 20th int . conf . on very large data bases , morgan & hellip ; ,. year: nan