@article {522,
	title = {Ammonia concentrations at a site in southern Scotland from 2 yr of continuous measurements},
	volume = {32},
	year = {1998},
	pages = {325-331},
	author = {Burkhardt, J. and Sutton, M.A. and Milford, C. and Storeton-West, R.L. and Fowler, D.}
}
