Surface second-harmonic generation in Au:TiO2 cermet thin films X. Quélin, M. Lemal, S. L. Gómez and A. Bourdon Eur. Phys. J. D, 30 2 (2004) 217-224 Published online: 06 July 2004 DOI: 10.1140/epjd/e2004-00087-1