@book{121585,
	author = {Turchin, Peter, and Nefedov, S. A. and ebrary, Inc.},
	title = {Secular cycles},
	publisher = {Princeton University Press,},
	year = {c2009.},
	address = {Princeton, N.J. :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10481991}
}