Metadata Repositories in Governmental Information Systems for Coastal Regions in Germany. - Wassilios Kazakos; Rainer Lehfeldt; Christian Michl; Carsten Heidmann; Aleksei Valikov (EnviroInfo, 2003)

The Hydrological IT Framework of the Federal Waterways and Shipping Administration, Germany. - Christian Michl; Frank Steinmann; Anja Reineke (EnviroInfo, 2005)