Kraemer, R. Andreas and Wenke Hansen 2001: "Kennzahlenvergleiche und Benchmarkingsysteme", in: Nachhaltige Wasserversorgung in Deutschland. Analyse und Vorschläge für eine zukunftsfähige Entwicklung. Berlin: Umweltbundesamt, 141-157.

Around the world, benchmarking to compare the performance of water supply undertakings is attracting interest. The focus is on management aspects and efficiency, but environmental and resource protection have not yet been reflected adequately in most systems. This project provides presents an overview with examples of benchmarking systems from all over the world. Some systems developed by international organisations and from Member States of the European Union (other than Germany) are explained in more detail.

Kraemer, R. Andreas and Wenke Hansen 2001: "Modelle der Wasserversorgung in Europa und Australien", in: Umweltbundesamt (UBA) (ed.): Nachhaltige Wasserversorgung in Deutschland: Analyse und Vorschläge für eine zukunftsfähige Entwicklung. Berlin: Erich Schmidt Verlag, 70-104.