1. Environment Agency, OFWAT, DEFRA, the Welsh Government, Water resources planning guideline - The technical methods and instructions, 2012.
2. How to bring ecological services into integrated water resources management;Falkenmark;AMBIO A J. Hum. Environ.,2000
3. G. Bjorklund, Water management in developing countries - policy and priorities for EU development cooperation, Stockholm, Sweden, 2001.
4. Environment Agency, Water Resources Management Plans 2019 – preparing for the future (main report), Halcrow Group Ltd, Swindon, 2013.
5. NERA, The Economics of Balancing Supply and Demand (EBSD) - main report, London, 2002.