Notes, Comments and Preliminary results Dec 12 2012 Andrea Loi and Stefano Matta   Structural stability and catastrophes.   Abstract  Contact Information  Citation  Full Text  -  Note   Sep 20 2006 Stefano Matta and Andrea Loi   A Riemannian metric on the equilibrium manifold: the smooth case   Abstract  Contact Information  Citation  Full Text  -  Preliminary Result