@book{109017,
	author = {Skyrms, Brian. and ebrary, Inc.},
	title = {The stag hunt and the evolution of social structure},
	publisher = {Cambridge University Press,},
	year = {2004.},
	address = {Cambridge, UK ;},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10124697}
}