Notes, Comments and Preliminary results Oct 20 2009 Aditi Roy and Sudipta Sarangi   Revisiting Friendship Networks   Abstract  Contact Information  Citation  Full Text  -  Note   Dec 29 2008 Christophe Bravard , Sudipta Sarangi and Pascal Billand   A Note on Existence of Nash Networks in One-way Flow   Abstract  Contact Information  Citation  Full Text  -  Note   Feb 13 2005 Sudipta Sarangi and Prabirendra Chatterjee   Enforcement with Costly Group Formation   Abstract  Contact Information  Citation  Full Text  -  Note