@article{altruismpoa,
	author = {Po-An Chen and Bart de Keijzer and David Kempe and Guido Sch\"{a}fer},
	title = {Altruism and Its Impact on the Price of Anarchy},
	journal = {ACM Transactions on Economics and Computation},
	volume = {2},
	number = {4},
	year = {2014},
	pages = {17:1--17:45},
	numpages = {45},
	publisher = {ACM}
}