@Article{hessd-6-1411-2009,
AUTHOR = {van der Zaag, P. and Gupta, J. and Darvis, L. P.},
TITLE = {HESS Opinions "Urgent water challenges are not sufficiently researched"},
JOURNAL = {Hydrology and Earth System Sciences Discussions},
VOLUME = {6},
YEAR = {2009},
NUMBER = {2},
PAGES = {1411--1431},
URL = {http://www.hydrol-earth-syst-sci-discuss.net/6/1411/2009/},
ISSN = {1812-2108}
}