@book{34311,
	author = {Biel, Anders. and Eek, Daniel. and SpringerLink (Online service)},
	title = {New Issues and Paradigms in Research on Social Dilemmas},
	publisher = {Springer US,},
	year = {2008.},
	address = {Boston, MA :},
	url = {http://dx.doi.org/10.1007/978-0-387-72596-3}
}