Dipole formation at metal/PTCDA interfaces: Role of the Charge Neutrality Level H. Vázquez, R. Oszwaldowski, P. Pou, J. Ortega, R. Pérez, F. Flores and A. Kahn Europhys. Lett., 65 6 (2004) 802-808 Published online: 01 March 2004 DOI: 10.1209/epl/i2003-10131-2