@article {335256,
	title = {Costly Punishment Across Human Societies},
	journal = {Science},
	volume = {312},
	number = {5781},
	year = {2006},
	pages = {1767-1770},
	author = {Henrich, J. and McElreath, R. and Ensminger, J. and Barr, A. and Barrett, C. and Bolyanatz, A. and Cardenas, J. C. and Gurven, M. and Gwako, E. and Henrich, N. and Lesorogol, C. and Marlowe, F. and Tracer, D. and Ziker, J.}
}
