@article {45512,
	title = {Nitrogen-15 uptake by Pinus contorta seddlings in relation to phenological stage and season},
	volume = {19},
	year = {2004},
	pages = {329-338},
	publisher = {Scandinavian Journal of Forest Research},
	url = {http://web.ebscohost.com/ehost/pdf?vid=185\&hid=104\&sid=a75ef7fa-4316-4a04-990f-aaec16d72710\%40sessionmgr113},
	author = {Amponsah, Isaac G. and Lieffers, Victor J. and Comeau, Philip G. and Landh{\"a}usser, Simon M.}
}
