@book{2991,
	author = {Lucretius Carus, Titus. and Leonard, William Ellery, and ebrary, Inc.},
	title = {On the nature of things},
	publisher = {Virginia Tech,},
	year = {2001.},
	address = {Blacksburg, VA :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=5000807}
}