@article {34959,
	title = {Comparison of the structures of even-aged aspen stands in three geographic regions},
	volume = {64},
	year = {1986},
	pages = {122-129},
	publisher = {Canadian Journal of Botany},
	url = {http://article.pubs.nrc-cnrc.gc.ca/RPAS/RPViewDoc?_handler_=HandleInitialGet\&calyLang=eng\&journal=cjb\&volume=64\&articleFile=b86-020.pdf},
	author = {Pielou, E. C. and Campbell, J. S. and Lieffers, V. J.}
}
