title: www-udk : a web-based environmental meta-information system. authors: r kramer , r nikolai , a koschel , c rolker , p lockemann , a keitel , r legat , k zirm. venue: sigmod record. year: 1997.0
title: integrating modelling systems for environmental management information systems dj abel , k taylor , d kuo sigmod record , 1997.0. authors: nan. venue: nan. year: nan