@article {41986,
	title = {Estimating a system of nonlinear simultaneous individual tree models for white spruce in boreal mixed-species stands},
	volume = {29},
	year = {1999},
	pages = {1805-1811},
	publisher = {Canadian Journal of Forest Research},
	url = {http://article.pubs.nrc-cnrc.gc.ca/RPAS/rpv?hm=HInit\&calyLang=eng\&journal=cjfr\&volume=29\&afpf=x99-139.pdf},
	author = {Huang, S. M. and Titus, S. J.}
}
