@Article{hess-11-356-2007,
AUTHOR = {Helliwell, R. C. and Coull, M. C. and Davies, J. J. L. and Evans, C. D. and Norris, D. and Ferrier, R. C. and Jenkins, A. and Reynolds, B.},
TITLE = {The role of catchment characteristics in determining surface water nitrogen in four upland regions in the UK},
JOURNAL = {Hydrology and Earth System Sciences},
VOLUME = {11},
YEAR = {2007},
NUMBER = {1},
PAGES = {356--371},
URL = {http://www.hydrol-earth-syst-sci.net/11/356/2007/},
DOI = {10.5194/hess-11-356-2007}
}