title: the database group at university of hagen ( fernuniversitaet ). authors: silke mittrach , gunter schlageter , thomas berkel , andreas scherer , eberhard heuel , wolfgang wilkes. venue: sigmod record. year: 1995.0
title: the database group at university of hagen. authors: gunter schlageter , thomas berkel , eberhard heuel , silke mittrach , andreas scherer , wolfgang wilkes. venue: acm sigmod record. year: 1995.0