@article{Croson2005,
	title = {Reciprocity, matching and conditional cooperation in two public goods games},
	author = {Rachel Croson and Enrique Fatas and Tibor Neugebauer},
	journal = {Economics Letters},
	month = {Apr},
	number = {1},
	pages = {95--101},
	url = {http://www.sciencedirect.com/science/article/B6V84-4F490KD-4/2/a516f0d28c7f9a57c7f25a4f79ab9cec},
	volume = {87},
	year = {2005},
	biburl = {http://www.bibsonomy.org/bibtex/217a37ee6d746c6e9da1eec01b234946b/smicha},
	description = {Economics Letters},
	keywords = {Weakest link mechanism }
}