@article {35229,
	title = {Sulphur gas emissions in the boreal forest: the west Whitecourt case study. VII. Pine tree physiology},
	volume = {29},
	year = {1986},
	pages = {129-147},
	publisher = {Water, Air, \& Soil Pollution},
	url = {http://www.springerlink.com/content/hg2w1q1171431026/fulltext.pdf},
	author = {Amundson, R. G. and Walker, R. B. and Legge, A. H.}
}
