@article {4739,
	title = {Gap Regeneration in Some Old-Growth Forests of the Eastern United States},
	journal = {Ecology},
	volume = {62},
	year = {1981},
	month = {August},
	pages = {1041-1051},
	keywords = {American beech, Forest canopy, Forests -- Old growth, Trees -- Growth},
	author = {Runkle, James Reade}
}
