title: birch : an efficient data clustering method for very large databases. authors: t zhang , r ramakrishnan , m livny. venue: sigmod conference. year: 1996
title: m. , l. : â ?? birch : an efficient data clustering method for very large databasesâ ??. authors: t zhang , r ramakrishnan. venue: proc . acm sigmod int . conf . on management of data ( sigmodâ ??. year: nan