Ag induced modifications on W 'O IND.3' films studied by AFM, Raman and x-ray photoelectron spectroscopy - Bittencourt, C.; Llobet, E.; Ivanov, P; Vilanova, X.; Correig, X.; Silva, Marcelo de Assumpção Pereira da; Nunes, Luiz Antônio de Oliveira; Pireaux, J. J. (Journal of Physics D, 2004)