@article {34113,
	title = {Biomass and growth of Populus tremuloides in northeastern Alberta: estimates using hierarchy in tree growth},
	volume = {14},
	year = {1984},
	pages = {610-616},
	publisher = {Canadian Journal of Forest Research},
	url = {http://article.pubs.nrc-cnrc.gc.ca/RPAS/RPViewDoc?_handler_=HandleInitialGet\&calyLang=eng\&journal=cjfr\&volume=14\&articleFile=x84-111.pdf},
	author = {Lieffers, V. J. and Campbell, J. S.}
}
