title: optics : ordering points to identify the clustering structure. authors: m ankerst , m breunig , h kriegel , j sander. venue: sigmod conference. year: 1999
title: m. , kriegel , h.-p . and sander , j. , 1999 , optics : ordering points to identify the clustering. authors: m ankerst , m breunig. venue: proceedings of. year: nan