1. , , . 1998. Crop Evapotranspiration-Guidelines for Computing Crop Water Requirements. FAO Irrigation and Drainage Paper 56. Food and Agriculture Organization of the United Nations: Rome.
2. The effects of climate change due to global warming on river flows in Great Britain
3. , , , . 2006. A handbook of climate trends across Scotland. SNIFFER project CC03, Scotland & Northern Ireland Forum for Environment Research.
4. Impacts of climate change on the fate and behaviour of pesticides in surface and groundwater—a UK perspective
5. , . 1995. Hydrology of soil types: a hydrologically-based classification of the soils of the United Kingdom. Institute of Hydrology Report No.126. Institute of Hydrology: Wallingford.