@book{72336,
	author = {Kragh, Helge, and ebrary, Inc.},
	title = {Matter and spirit in the universe},
	publisher = {Imperial College Press ;},
	year = {c2004.},
	series = {History of modern physical sciences ;},
	address = {London :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10091221}
}