Directed altruism and enforced reciprocity in social networks
Subtitle: how much is a friend worth?
By: Stephen Leider ... [et al.].
Contributors: Leider, Stephen.; National Bureau of Economic Research.
Series: NBER working paper series -- working paper 13135.; Working paper series (National Bureau of Economic Research) -- working paper no. 13135.
Publisher: National Bureau of Economic Research
Published: 2007
Place of publication: Cambridge, Mass
Language: eng
Number of pages: 49
Subjects: Social networks -- Mathematical models
Notes: "May 2007."

Includes bibliographical references (p. 32-34).

Also available in PDF from the NBER World Wide Web site (www.nber.org).