Notes, Comments and Preliminary results Dec 23 2009 Giorgio Fagiolo , Mauro Napoletano , Marco Piazza and Andrea Roventini   Detrending and the Distributional Properties of U.S. Output Time Series   Abstract  Contact Information  Citation  Full Text  -  Note   Dec 29 2006 Giorgio Fagiolo   Directed or Undirected? A New Index to Check for Directionality of Relations in Socio-Economic Networks   Abstract  Contact Information  Citation  Full Text  -  Note   Oct 06 2005 Giorgio Fagiolo   A Note on Equilibrium Selection in Polya-Urn Coordination Games   Abstract  Contact Information  Citation  Full Text  -  Note