@article {971,
	title = {Nitrogen deposition makes a minor contribution to carbon sequestration in temperate forests.},
	journal = {Nature},
	volume = {398},
	year = {1999},
	pages = {145-148},
	author = {Nadelhoffer and Emmett, B.A. and Gundersen, P. and Kjonaas, O.J. and Koopmans, C.J. and Schleppi, P. and Tietema, A. and Wright, R.F.}
}
