@book{221821,
	author = {Natvig, Bent, and ebrary, Inc.},
	title = {Multistate systems reliability theory with applications},
	publisher = {Wiley,},
	year = {2011.},
	series = {Wiley series in probability and statistics},
	address = {Hoboken, N.J. :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10469650}
}