Notes, Comments and Preliminary results Dec 23 2013 Camilla Di Luca , Josep M Izquierdo and Carles Rafels   Remarks on the proportional distribution in increasing return to scale problems   Abstract  Contact Information  Citation  Full Text  -  Note   Jul 20 2012 Josep M Izquierdo and Carles Rafels   On the coincidence of the core and the bargaining sets   Abstract  Contact Information  Citation  Full Text  -  Preliminary Result