@article {37672,
	title = {Sulphur gas emissions in the boreal forest: the west Whitecourt case study VIII: pine tree mineral nutrition},
	volume = {50},
	year = {1990},
	pages = {219-232},
	publisher = {Water, Air, \& Soil Pollution},
	url = {http://www.springerlink.com/content/h2439342604k2250/fulltext.pdf},
	author = {Amundson, R. G. and Walker, R. B. and Schellhase, H. U. and Legge, A. H.}
}
