Open Photoacoustic Cell study of thermal diffusivity of Nafion® as a function of water content D.T. Dias, J. Mura, M.L. Baesso, A.N. Medina, A.C. Bento et J. Shen J. Phys. IV France, 125 (2005) 383-386 DOI: 10.1051/jp4:2005125089