@article{publication-3941,
	author={Hart, Oliver and Zehnder, Christian and Fehr, Ernst},
	doi={10.1257/aer.101.2.493},
	issn={0002-8282},
	journal={American Economic Review},
	number=2,
	pages={249-525},
	publisher={American Economic Association},
	title={Contracts as reference points - experimental evidence},
	volume=101,
	year=2011,
}