@article {35219,
	title = {Stand structure, variability in growth and intraspecific competition in a peatland stand of black spruce picea mariana},
	volume = {9},
	year = {1986},
	pages = {58-64},
	publisher = {Holarctic Ecology},
	url = {http://www.jstor.org/stable/3682111},
	author = {Lieffers, V. J.}
}
