@article {23624,
	title = {School Vouchers in the United States:  Productivity in the Public and Private Sectors},
	journal = {Zeitschrift f{\"u}r Erziehungswissenschaft - Journal of Educational Science},
	volume = {ZfE 11},
	number = {2},
	year = {2008},
	pages = {253-267},
	author = {Paul E Peterson}
}
