Changes

*Jackson, Matthew O. (2003), "A Survey of Models of Network Formation: Stability and Efficiency", in "Group Formation in Economics: Networks, Clubs, and Coalitions", edited by Gabrielle Demange and Myrna Wooders, Cambridge University Press([[Media:Jackson (2003) - A Survey of Models of Network Formation Stability and Effciency.pdf |pdf]])*Manski (1993): Identi…cation of Endogenous Social E¤ects: The Re‡ection Problem, Review of Economic Studies , 60 , pp. 531-542.([[Media:Manski (1993) - Identification of Endogenous Social Effects.pdf |pdf]])*Ozsoylev, Han, Johan Walden, Deniz Yavuz, Recep Bildik (2011), “Investor Networks in the Stock Market”, Working Paper([[Media:Ozsoylev Walden Yavuz Bildik (2011) - Investor Networks in the Stock Market.pdf |pdf]])*Sacerdote (2001): Peer E¤ects with Random Assignment: Results for Dartmouth Roommates, Quarterly Journal of Economics , 116 (2) , pp. 681-704([[Media:Sacerdote (2001) - Peer Effects with Random Assignment.pdf |pdf]])