@booklet {yaari-psar2004,
	title = {Parity, Sympathy, and Reciprocity},
	howpublished = {Discussion Papers},
	year = {2004},
	month = {3},
	url = {/files/dp354.pdf},
	author = {Yaari, Werner G{\textonequarter}th and Menahem E.}
}
