@article {Grosenbaugh:1963:0015-749X:,
	author = "Grosenbaugh, L. R.",
	title = "Optical Dendrometers For Out-Of-Reach Diameters: A Conspectus And Some New Theory",
	journal = "Forest Science",
	volume = "9",
	number = "Supplement 4",
	year = "1963",
	pages = "a0001",
	url = "http://www.ingentaconnect.com/content/saf/fs/1963/00000009/A00402s4/art00001"
}