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: data management in environmental information systems o gã 1/4 nther 2002.0. authors: nan. venue: handbook of massive data sets table of contents ,. year: nan