@article {1437,
	title = {The nutritional status of Picea abies (L.) Karst. across Europe, and implications for "forest decline".},
	journal = {Trees},
	volume = {4},
	year = {1990},
	pages = {211-224},
	author = {Cape, J.N and Freer-Smith, P.H. and Paterson, I.S. and Parkinson, J.A. and Wolfenden, J.}
}
