@article {38412,
	title = {Is long-lived foliage in Picea mariana an adaptation to nutrient-poor conditions?},
	volume = {91},
	year = {1992},
	pages = {184-191},
	publisher = {Oecologia},
	author = {Greenway, Ken J. and Macdonald S. Ellen and Lieffers, Victor J.}
}
