Proton mobility calculations in the presence of negative capacitances F. Fernández Gutiérrez, A. R. Ruiz-Salvador, J.-C. M'Peko and M. Hernández Vélez Europhys. Lett., 44 2 (1998) 211-215 Published online: 01 September 2002 DOI: 10.1209/epl/i1998-00458-0