title: the treescape system : reuse of pre-computed aggregates over irregular olap hierarchies. authors: curtis e. dyreson , torben bach pedersen , christian s. jensen. venue: vldb. year: 2000
title: the treescape system : reuse of pre-computed aggregates over irregular olap hierarchies. authors: torben bach pedersen , christian s. jensen , curtis e. dyreson. venue: very large data bases. year: 2000