A paper which deals with the virtual water content of wheat. The assessment is made on a global level and includes the exploring of green, blue and grey water used during wheat production.
MEKONNEN, M.M. ; HOEKSTRA, A.Y. (2010): A Global and High-resolution Assessment of the Green, Blue and Grey Water Footprint of Wheat. In: Hydrology and Earth System Sciences: Volume 14 , 1259-1276. URL [Accessed: 12.10.2010]