Kraemer, R. Andreas and Kai M. Banholzer 1999: "Tradeable Permits in Water Resource Management and Water Pollution Control", in: OECD (Hg.): Implementing Domestic Tradable Permitsfor Environmental Protection. Paris: OECD, 75-107.
Kraemer, R. Andreas; Kai M. Banholzer 1998: Tradable Permits in Water Ressource Management and Water Pollution Control. Ecologic – Center for International and European Environmental Research, Berlin.