TY - JOUR A1 - van der Zaag, P. A1 - Gupta, J. A1 - Darvis, L. P. T1 - HESS Opinions "Urgent water challenges are not sufficiently researched" JO - Hydrol. Earth Syst. Sci. Discuss. J1 - HESSD VL - 6 IS - 2 SP - 1411 EP - 1431 Y1 - 2009/03/02 PB - Copernicus Publications SN - 1812-2108 UR - http://www.hydrol-earth-syst-sci-discuss.net/6/1411/2009/ L1 - http://www.hydrol-earth-syst-sci-discuss.net/6/1411/2009/hessd-6-1411-2009.pdf ER -