@article {33581,
	title = {Solar radiation attenuation in a hillside jack pine forest},
	volume = {60},
	year = {1982},
	pages = {1913-1922},
	publisher = {Canadian Journal of Botany},
	url = {http://article.pubs.nrc-cnrc.gc.ca/RPAS/RPViewDoc?_handler_=HandleInitialGet\&calyLang=eng\&journal=cjb\&volume=60\&articleFile=b82-239.pdf},
	author = {Whitfield, D. W. A. and Mehlenbacher, L. A. and Labine, C.}
}
