Notes, Comments and Preliminary results Jul 20 2012 Miguel A. Espinosa and Juan D. Prada   Identities for Homogeneous Utility Functions   Abstract  Contact Information  Citation  Full Text  -  Note   Jan 04 2011 Juan David Prada   A note on concavity, homogeneity and non-Increasing returns to scale   Abstract  Contact Information  Citation  Full Text  -  Note