@article {555,
	title = {Nitrogen Uptake and Allocation by Calluna-Vulgaris (L) Hull and Deschampsia-Flexuosa (L) Trin Exposed to 15NH3},
	journal = {Acta Botanica Neerlandica},
	volume = {40},
	year = {1991},
	pages = {257-267},
	author = {Dueck, T.A. and Van der Eerden, L.J.M. and Beemsterboer, B. and Elderson, J.}
}
