@article {6256,
	title = {Alternation and Coexistence of Tree Species},
	journal = {The American Naturalist},
	volume = {111},
	year = {1977},
	month = {January/February},
	pages = {69-89},
	keywords = {Spruce-Fir forests, Trees -- Classification and description},
	author = {Fox, John F}
}
