1. Aix Marseille Univ, CNRS, MADIREL (UMR 7246), Campus Etoile-St Jérôme, 13013 Marseille, France
2. International Associated Laboratory (L.I.A.) “Ionomer Materials for Energy”, Aix Marseille Univ, CNRS, 13013 Marseille, France
3. Univ. Rome Tor Vergata, Dip. Ing. Industriale, Via del Politecnico, 00133 Roma, Italy