A worldwide look at the state of water quality trading: Based on a survey of stakeholders, an overview of the key factors necessary for a successful program implementation is compiled, resulting in recommendations for the development of water quality trading programs.
SELMAN, M. GREENHALGH, S. BRANOSKY, E. JONES, C. GUILING, J. (2009): Water Quality Trading Programs. An International Overview. (= WRI Issue Brief , 1 ). Washington D.C.: World Resources Institute (WRI) URL [Accessed: 13.06.2012]